2012. Vol.3, No.9, 702-712
Published Online September 2012 in SciRes (http://www.SciRP.org/journal/psych) http://dx.doi.org/10.4236/psych.2012.39107
Copyright © 2012 SciRes.
Happiness as Surplus or Freely Available Energy
Matthew T. Gailliot
University of Albany, Albany, USA
Received March 24th, 2012; revised May 7th, 2012; accepted June 8th, 2012
This paper presents a literature review that indicate happiness as a state of freely available or surplus
energy. Happiness is associated with good metabolism and glucose levels, fewer demands (from parenting,
work, difficult social relationships, or personal threats), and goal achievement, as well as increased ease
of processing, mental resources, social support, and monetary wealth. Each of these either provide or help
Keywords: Happiness; Emotion; Energy; Efficiency
A focus on energy could be a powerful psychological perspec-
tive. People are organisms made of metabolic energy, and life
can be viewed as a process of attaining and managing metabolic
energy. Some work indicates that evolution selected on tenden-
cies to attain increasingly larger amounts of energy (e.g., sugar,
oil) from the environment and to use that energy efficiently
(e.g., modern technology, Gilliland, 1978; Lotka, 1922; Odum,
1995). From this view, having and controlling energy should be
associated with feeling good—one is fulfilling an evolved ten-
dency—whereas lacking energy should feel bad.
The current work presents the theory that happiness is a state
of having freely available or surplus energy (i.e., when energy
availability exceeds demands). Processes that create or sustain
this surplus are concomitant with happiness. The paper pro-
vides an in-depth review of the relevant literature on happiness
and presents an experimental test of one hypothesis derived
from the theory—that displays of happiness signal that one has
expendable energy. The purpose of the review is to present a
novel theory of happiness that advances research on and under-
standing of the topic and that synthesizes and links disparate
Energy relevant to happiness can take two forms. One is bio-
logical, metabolic energy (e.g., glucose). All cells in the body
use metabolic energy. When metabolite supply exceeds demand,
there is a surplus. The theory is that people are less happy when
metabolic energy is low.
The other forms of energy relevant to happiness are second-
dary sources of metabolic energy—sources that provide or
conserve metabolic energy. These include social relationships
(e.g., friends give food to one another and facilitate effortful
coping) and technology (e.g., modern transportation conserves
mechanical energy used for walking, computers reduce meta-
bolic energy needed for memory because they preserve infor-
mation). Secondary sources of energy are posited to be associ-
ated with happiness because they increase the likelihood of
Happiness as Concomitant with Available
Energy—A Review of the Happiness Literature
Many studies link happiness with available energy. People
generally associate happiness more with energy than a lack
thereof. Energetic music (e.g., higher pitch tones, faster tempos,
ascending scales) has been rated as happier than less energetic
music (Collier & Hubbard, 2001a, 2001b). Words indicative of
happiness tend to reflect having energy to a greater extent than
words less indicative of happiness (Storm, 1996).
Happy people tend to be more energetic, excited, and zestful
than less happy people (Block & Kremen, 1996; Csikszentmi-
halyi & Hunter, 2003; Klohnen, 1996; Park & Peterson, 2006;
Peterson, Ruch, Beermann, Park, & Seligman, 2007; Ryan &
Frederick, 1997). Happiness is associated with increased acti-
vity (Csikszentmihalyi & Hunter, 2003; Veenhoven, 1988).
One study found that watching a video that induced joy (v fear
or anger) increased the number of activities in which partici-
pants wanted to engage (Fredrickson & Branigan, 2004). Men
in one study talked more to a female after having seen stimuli
that increased positive (v negative) mood (Cunningham, 1988).
Another study found that cricket players who were happy (v
less happy) displayed more energy, enthusiasm, focus, and
confidence (Totterdell, 1999).
Increased extraversion, often associated with energetic be-
havior, has strong links to happiness (Brebner, Donaldson,
Kirby, & Ward, 1995; Cheng & Furnham, 2002; Francis, 1998;
Francis, Brown, Lester, & Philipchalk, 1998; Francis & Lester,
1997; Furnham & Cheng, 1999; Hills & Argyle, 2001; Jopp &
Rott, 2006; Lu & Shih, 1997), even when making comparisons
across nations (Steel & Ones, 2002). Extraversion is associated
with increased approach, and likewise happiness has been
linked to increased engagement and sociability (Csikszentmi-
halyi & Hunter, 2003; Peterson et al., 2007).
Depression is strongly and negatively associated with happi-
ness (APA, 1994; Joseph & Lewis, 1998; Kammann & Flett,
1983; Matsubayashi et al., 1992; McGreal & Joseph, 1993). A
defining feature of depression is low energy or tiredness
(McGillivray & McCabe, 2007; Naarding et al., 2007).
Even perceptual biases suggest happiness as a state of sur-
plus energy. Participants induced into a happy (v sad) mood
perceived a hill as less steep (Riener, Stefanucci, Proffitt, &
Clore, 2003). The idea is that happy participants had sufficient
energy to ascend the hill, and so it appeared less steep.
Happiness generally has thus been linked to having available
M. T. GAILLIOT
energy, whereas low happiness (or sadness) has been linked to
low energy. This pattern is mirrored in work on primary and
secondary sources of metabolic energy.
Metabolic energy is the primary energy through the use of
which all thought and action occur. Evidence indicates that
happiness is reduced when the metabolic energy of glucose is
low or its use is impaired, whereas happiness is higher when
adequate amounts of usable glucose are available.
Bad or depressed moods are more common when glucose is
low (Barglow et al., 1984; Benton & Owens, 1993; Hepburn,
Deary, MacLeod, & Frier, 1996; Taylor & Rachman, 1988;
Wredling, Theorell, Roll, Lins, & Adamson, 1992; Yaryura-
Tobias & Neziroglu, 1975; cf. Reid & Hammersley, 1995;
Scholey & Kennedy, 2004) and among people with (v without)
diabetes, who process glucose less effectively and are prone to
experience hypoglycemia (e.g., Eren, Erdi, & Özcankaya, 2003;
Fabrykant & Pacella, 1948; Fris & Nanjundappa, 1986; Gon-
der-Frederick, Cox, Bobbitt, & Pennebaker, 1989; Lustman,
Griffith, Clouse, & Cryer, 1986; Mueller, Heninger, & Mc-
Donal, 1968; Popkin, Callies, Lentz, Colon, & Sutherland,
1988; Van Pragg & Leijnse, 1965; Wells, Golding, & Burnam,
1989; Wilson, 1951). A glucose clamp (v control device),
which reduces glucose levels, has been found to worsen mood
(Gold, MacLeod, Deary, & Frier, 1995; McCrimmon, Frier, &
Deary, 1999), as has skipping breakfast (Smith, Clarka, & Gal-
laghera, 1999). Conversely, glucose drinks (v placebos) have
been found to improve mood (Benton, Brett, & Brain, 1987;
Benton & Owens, 1993).
Research on the symptoms of premenstrual syndrome (PMS)
provides converging evidence. Metabolic energy use by the
ovaries increases during PMS (e.g., Aschoff & Pohl, 1970;
Bisdee & James, 1983; Bisdee, James, & Shaw, 1989; Dalton,
1999; Hessemer & Bruck, 1985; Landgren, Unden, & Diczfa-
lusy, 1980; Mayo, 1997; Solomon, Kurzer, & Calloway, 1982;
Webb, 1981, 1986), thereby reducing the likelihood of energy
surplus. A large body of evidence links conclusively PMS to
more negative mood (Bailey & Cohen, 1999; Baker, Best,
Manfredi, Demers, & Wolf, 1995; Bloch, Schmidt, & Rubinow,
1997; Dalton, 1999; Evans, Haney, Levin, Foltin, & Fischman,
1998; George, 2009; Hartlage & Arduino, 2002; Limosin,
Gorwood, & Ades, 2001; Natale & Albertazzi, 2006; Rapkin,
2003; Rubinow et al., 1986; Symonds, Gallagher, Thompson, &
Young, 2004; Zhao, Wang, Qu, & Wang 1998).
Using self-control has been found to decrease glucose in the
bloodstream (Fairclough & Houston, 2004; Gailliot et al.,
2007a; Gailliot, 2009a). Using self-control therefore might
worsen mood. Individual studies have largely failed to find
evidence that using self-control worsens mood, yet a meta-
analysis of over 600 participants found a small effect of self-
control worsening mood (Gailliot & Vohs, 2009).
If metabolic energy improves mood, then people might eat so
as to escape negative moods. Indeed, depression increases food
cravings (Dye, Warner, & Bancroft, 1995) and eating is a typi-
cal response to relieve personal distress (Tice, Baumeister,
Shmueli, & Muraven, 2006).
Physiological states, aside from glucose, related to metabolic
energy distribution might also relate to mood. Pleasant stimuli
(e.g., odors, pictures) reduced cortisol (Barak, 2006), which
functions partly to increase blood-glucose. Another study de-
monstrated that happiness (v anger or anxiety) predicted lower
blood pressure (James, Yee, Harshfield, Blank, & Pickering,
1986). Increased blood pressure can be concomitant with in-
creased metabolite distribution.
Some studies examining energy use in the brain also are con-
sistent with a link between happiness and surplus energy. Neu-
roscience evidence indicates that sadness can increase brain
energy use, whereas happiness can decrease it (Baxter et al.,
1989; George et al., 1995).
Self-control allows for emotional coping (e.g., regulating
moods so as to increase happiness, Baumeister, Bratslavsky,
Muraven, & Tice, 1998; Finkel & Campbell, 2001; Gailliot,
Schmeichel, & Baumeister, 2006; Gailliot, Schmeichel, &
Maner, 2006; Muraven & Slessareva, 2003; Muraven, Tice, &
Baumeister, 1998; Schmeichel, Demaree, Robinson, & Pu,
2005; Schmeichel, Vohs, & Baumeister, 2003; Shamosh &
Gray, 2006; Vohs, Baumeister, & Ciarocco, 2005) and is in-
trinsically tied with glucose metabolism (DeWall, Baumeister,
Gailliot, & Maner, 2008; DeWall, Gailliot, Deckman, & Bush-
man, 2009; Fairclough & Houston, 2004; Gailliot, 2008, 2009a,
2009b, 2009d, 2009e, in press; Gailliot et al., 2007; Gailliot &
Baumeister, 2007; Gailliot, Hildebrandt, Eckel, & Baumeister,
2009; Gailliot, Peruche, Plant, & Baumeister, 2009; Masicampo
& Baumeister, 2008). A survey across nations indicated that the
ability to cope is a primary determinant of happiness (Haller &
Other work further implicates self-control, and hence me-
tabolism, as linking happiness to energy. Noise impairs self-
control (Muraven & Baumeister, 2000) perhaps via metabolite
depletion (Gailliot & Baumeister, 2007). Likewise, noise pollu-
tion predicts reduced happiness (Weinhold, 2008). Others have
argued that happiness rests crucially on the regulation and con-
trol of drives, impulses, and objects (Furnham & Petrides, 2003;
Mukherjee & Basu, 2008), which is akin to self-control.
The composition of neurotransmitters can be used to test
whether happiness is associated with increased energy. The
prediction is that neurotransmitters associated with happiness
contain more useable energy than do other neurotransmitters.
Neurons fire via the use of adenosine triphosphate (ATP) de-
rived from breaking carbon-to-carbon bonds. Dopamine is
positively associated with happiness (Bressan & Crippa, 2005;
Drevets et al., 2001), and it contains more carbon than do other
neurotransmitters, such as acetylcholine, γ-Aminobutyric acid
(GABA), or glutamate (Wikipedia, 2012), thus supporting the
Demands on Metabolic Energy
That which uses more energy can be considered a demand on
metabolic energy, and that which uses more energy also re-
duces the likelihood of there being freely available or surplus
energy. Numerous studies link increased life demands, there-
fore entailing increased energy use (Fairclough & Houston,
2004), to reduced happiness. Happiness will often be associated
with low energy and high demands because these are times
when a surplus of energy is less likely.
Being a parent demands a lot of energy (e.g., obtaining
money). It also reduces happiness (Glenn & McLanahan, 1982;
Glenn & Weaver, 1978; McLanahan & Adams, 1987; Nicolson,
1999; White, Booth, & Edwards, 1986).
Copyright © 2012 SciRes. 703
M. T. GAILLIOT
Work often is effortful and entails overriding intrinsic, so as
to meet extrinsic, motivations (Gordijn, Hindriks, Koomen,
Dijksterhuis, & Van Knippenberg, 2004). When work is less
demanding—such as toward the weekend (Csikszentmihalyi &
Hunter, 2003; Gallup, 2008; Mihalcea & Liu, 2006) or when
more leisure time is afforded (Cameron, 1975; Csikszentmiha-
lyi & Hunter, 2003; Easterlin, 2003; Tella & MacCulloch, 2007;
Tkach & Lyubomirsky, 2006; Yu et al., 2002)—happiness is
greater. The effort of caring for one with a disability likewise
predicts reduced happiness (Easterlin, 2003; Eriksson, Tham, &
Fugl-Meyer, 2005; Marinic & Brkljacic, 2008). Demanding
marriages reduce happiness relative to those that do not (Lu &
Shih, 1997; Orden & Bradburn, 1969; Pina & Bengston, 1993;
Rabin & Shapira-Berman, 1997; Ward, 1993), as do difficult
social relationships relative to easier ones (e.g., such as through
the conflict of worldviews, Burleson, 1994; Ortega, Whitt, &
Williams, 1988; Pickford, Signori, & Rempel, 1966; Suitor,
1987; Welsch, 2008).
Other demands have also been linked to reduced happiness.
Physical attractiveness among women, for whom good looks
especially save energy in pursuit of attracting and attaining high
quality mates, but not men has been found to predict increased
happiness (Mathes & Kahn, 1975). Homeless people (v people
who have a home) are less happy (Biswas & Diener, 2006).
Social projects that reduce living demands likewise increase
happiness (Moller & Jackson, 1997).
Happiness can be considered the opposite of experiencing
personal threat, and threat occurs when demands exceed avail-
able resources to cope (Blascovich & Tomaka, 1996; Blas-
covich & Mendes, 2000). Happiness therefore should involve
having resources or experiencing low demands. Mortality is
more threatening when metabolic energy is low (Gailliot,
2009b, in press), and mortality salience might reduce glucose
(Gailliot et al., 2007). Greater religiosity has been found to
reduce the threat, and therefore costs, of mortality salience
(Jonas & Fischer, 2006), and therefore should be associated
with an increased likelihood of surplus energy (due to reduced
costs coping with mortality). Connecting this possibility to
happiness, religion is associated with greater happiness (Cam-
eron, 1975; French & Joseph, 1999; Francis & Lester, 1997;
Lelkes, 2005; Swinyard, Kau, & Phua, 2001; cf. Lewis, Lani-
gan, Joseph, & Fockert, 1997; Lewis, Maltby, & Burkinshaw,
2000). Threat occurring from being bullied or sexually harassed
among children predict reduced happiness (Gibbs & Sinclair,
2000), as does greater social anxiety (Neto, 2001).
Some theorists have argued that happiness is reduced be-
cause life is more demanding due to our living in a world that is
radically different from the one in which our ancestors evolved
(Buss, 2000; Grinde, 2002). Hence, metabolically expensive
(Fairclough & Houston, 2004; Gailliot et al., 2007; Gailliot &
Baumeister, 2007) regulation systems are overactive (Nesse,
A goal is a metabolic demand ongoing for some time. A goal
thus can be represented as a process of metabolic energy at-
tainment and use (e.g., each time a dieter sees a piece of cake,
he or she effortfully uses self-control to avoid it, a person with
a physical fitness goal regularly expends metabolic energy
every workout). When a goal ceases or is relinquished, energy
previously committed to the goal becomes freely available,
surplus energy. Such dynamics should influence happiness.
Indeed, meeting a goal, or goals, can increase happiness
(Diener & Lucas, 2000; Haybron, 2008; Kasser & Ryan, 1993).
Hence, satisfaction with specific life domains predicts increased
happiness (Michalos, 1980). Happiness is strongly influenced
by discrepancies between what one has and wants (Michalos,
1983; Tsou & Liu, 2001), perhaps because of the extent to
which one is motivated or has formed goals to obtain more. The
goal of maximizing (v nonmaximizing)—in which people at-
tempt to choose the very best among every option—might also
reduce happiness (Schwartz et al., 2002).
Mental Resources and Processing Fluency
Biological resources—metabolic energy—often has been re-
ferred to as “mental resources” in the social sciences, though
the construct overlaps with actual metabolic energy (Gailliot et
al., 2007; Gailliot & Baumeister, 2007; Gailliot, 2009c). Find-
ings on mental resources and ease of processing are consistent
with the idea that happiness is concomitant with energy.
Happy people appear to have more mental resources than
less happy people, such that they are more creative, mindful,
and optimistic (Basso et al., 1996; Derryberry & Tucker, 1994;
Fredrickson & Branigan, 2004; Isen et al., 1987). They display
broader thought and attention and are more open to information
(Estrada et al., 1997). Happy (vs unhappy) children have been
found to delay gratification longer (Moore, Clyburn, & Under-
wood, 1976; Schwarz & Pollack, 1977). Negative moods seem
to impair self-control (Leith & Baumeister, 1996; Tice, Brat-
slavsky, & Baumeister, 2001). Positive affect has been found to
replenish self-control when it is fatigued (Tice et al., 2006).
One contradictory finding was that a happiness induction in-
creased stereotype use (Bodenhausen, Kramer, & Susser, 1994),
suggesting reduced mental resources (Devine, 1989). It could
be that happy people have more energy and mental resources,
though they might not always willingly expend their energy or
resources. Hence, when participants were held accountable for
their stereotype use, happiness did not increase stereotype use
(Bodenhausen et al., 1994).
Stimuli that take less energy to process—such as those that
are familiar—should be liked more than stimuli that take more
energy to process, consistent with the link between having
freely available energy and happiness. In support of this, stim-
uli that are easier to process and familiar are liked more than
other stimuli, and these stimuli have been found to produce less
brain activation (i.e., use less energy) (Bornstein, 1989; Ca-
cioppo & Winkielman, 2001; Desimone, Miller, Chelazzi, &
Lueschow, 1995; Haber & Hershenson, 1965; Harrison, 1977;
Jacoby & Dallas, 1981; Whittlesea, Jacoby, & Girard, 1990;
Witherspoon & Allan, 1985; Zajonc, 1968, 2001, 2002). People
also like more stimuli that are prototypical or symmetrical
(Berlyne, 1974; Halberstadt & Rhodes, 2000; Langlois &
Roggman, 1990; Martindale & Moore, 1988; Rhodes & Tre-
mewan, 1996) possibly because they are processed faster and
more efficiently (Checkosky & Whitlock, 1973; Johnstone,
1994; Palmer, 1991; Posner & Keele, 1968; Rosch & Lloyd,
1978) which should reduce energy use (Mulder, 1986). Antici-
pated (v unanticipated) information has been found to be pro-
cessed faster and hence easier, and to be more pleasant (Whit-
tlesea, 1993). Likewise, factors that facilitate the processing of
stimuli have been found to increase liking for the stimuli (Reber,
Winkielman, & Schwarz, 1998). Numbers are more easily proc-
Copyright © 2012 SciRes.
M. T. GAILLIOT
essed in Chinese than in English, and math tends to be better
liked among Chinese than English speakers (Gladwell, 2009).
Factors that provide energy or reduce its use (sources of se-
condary energy) also suggest a connection between happiness
and having energy. Two examples are social support and mone-
Social support can provide energy or reduce its use in several
ways. People give one another food. They also save energy in
many ways for one another, such as by helping one another,
assisting in coping with stress, or providing resources while
requiring relatively little work (e.g., parents giving clothing to
Ample evidence demonstrates that people are happier with
better social support or more social involvement (Baumeister &
Leary, 1995; Booth, 1992; Brim, 1974; Chan & Lee, 2006;
Gundelach & Kreinar, 2004; Jopp & Rott, 2006; Kehle & Bray,
2003; Lane, 1994, 2000; Lu, 1999; Lu, Shih, Lin, & Ju, 1997;
Natvig, Albrektsen, & Qvarnstrom, 2003; Neto, 2001; North,
Holahan, Moos, & Cronkite, 2008; Perneger, Hudelson, &
Bovier, 2004; Phillips, 1967; Ryuichi et al., 1999; Singh et al.,
2004; Uchida, Norasakkunkit, & Kitayama, 2004). Happiness is
positively associated with self-esteem (Baumeister, Campbell,
Krueger, & Vohs, 2003), and self-esteem reflects belongingness
(Leary & Baumeister, 2000). People report seeking social con-
tact so as to increase their happiness (Tkach & Lyubomirsky,
2006). Married people tend to be happier than unmarried people
(Cid, Ferres, & Rossi, 2008; Mookherjee, 1998; Stack & Esh-
leman, 1998). Religious institutions can serve as a source of
social support, and religious involvement predicts increased
happiness (Cameron, 1975; Francis & Lester, 1997; French &
Joseph, 1999; Lelkes, 2005; Swinyard, Kau, & Phua, 2001; cf.
Lewis, Lanigan, Joseph, & Fockert, 1997; Lewis, Maltby, &
Burkinshaw, 2000). Likewise, the end of social relationships
and death greatly reduce happiness (Ballas & Dorling, 2007;
Oswald & Powdthavee, 2008).
Money is another source of secondary energy. Money can be
used to acquire metabolic energy (e.g., buy food) and it can also
save energy (e.g., paying for a taxi rather than walking, hiring
an accountant to do one’s taxes, using air conditioning rather
than sweating in the heat). People with money can have a more
leisurely, effortless life than can those without. Money there-
fore should be associated with a greater likelihood of having
Ample research demonstrates a positive correlation between
wealth and happiness. Across both nations and individuals,
wealth predicts happiness (Biswas-Diener & Diener, 2006; Cid,
Ferres, & Rossi, 2008; Diener, Horwitz, & Emmons, 1985;
Easterlin, 1995, 2001; Gardner & Oswald, 2001; Gerdtham &
Johannesson, 2002; Hagerty & Veenhoven, 2003; Johnson &
Krueger, 2006; Mookherjee, 1998; Namazie & Sanfey, 1998;
North, Holahan, Moos, & Cronkite, 2008; Rogers & DeBoer,
2001; Saunders, 2009; Schyns, 1998; Stack & Eshleman, 1998;
Steel & Ones, 2002; Tella & MacCulloch, 2007; Tella, Mac-
Culloch, & Oswald, 2003; Tella, New, & MacCulloch, 2007;
Shin & Johnson, 1978; Veenhoven, 1991, 1995; World Bank,
1997; cf. Easterlin, 2005). Likewise, unemployment might lead
to unhappiness (Booth & Ours, 2007; Di Tella, MacCulloch, &
Oswald, 2001; Frey & Stutzer, 2000; Graham & Pettinato,
When people aspire for more than they have, however,
money might not lead to happiness (Hagerty, 2000; Stutzer,
2004; Tsou & Liu, 2001). This is consistent with the idea that
happiness is reduced with increased demands or goals—in this
case, to acquire more wealth.
An Experimental Test—Displays of Happiness
as Energetically Inefficient
If happiness is concomitant with having available or surplus
energy, then its expression may signal that one has expendable
energy. Expressions of happiness may entail reduced effi-
Past work has found that depressed individuals conserve en-
ergy in their movements—they move relatively little (Fisch,
Frey, & Hirsbrunner, 1983; Griesinger, 1876; Kraepelin, 1913).
Upon recovering from depression, people move more, more
complexly, and more rapidly. This suggests that happiness
might be negatively associated with the conservation of me-
An experimental study showed that more participants who
received a positive comment (e.g., “I like your shirt.”) from an
experimenter lifted their feet less efficiently while walking
upstairs than did participants who received a neutral comment
(i.e., “This is Hall C.”), χ2 = 2.78, p < .05 (one-tailed; see Fig-
A review of the literature on happiness and an experimental
test provided general support for the idea that happiness is a
state in which one has freely available or surplus energy. This
pattern emerged from work on a variety of topics, including
metabolism, demands (parenting, work, difficult social relation-
ships, personal threat), goals, ease of processing and liking,
Efficient Step Height
Inefficient Step Height
Number of people who exhibited either efficient or inefficient step
height as a function of having received either a compliment or neutral
Copyright © 2012 SciRes. 705
M. T. GAILLIOT
mental resources, social support, and monetary wealth. The
theory brings together work across several different disciplines,
including neuroscience, endocrinology, social psychology, eco-
nomics, sociology, and biology.
The theory of happiness and energy should help explain find-
ings on happiness other than those reviewed. Happiness has
been found to predict future success (e.g., in marriage, friend-
ship, wealth, work, and health, Lyubomirsky, King, & Diener,
2005). To the extent that happiness represents having energy,
then being capable of energy-demanding activities (e.g., re-
solving difficulties with a spouse) should lead to lead to future
One seemingly inconsistent finding may be that hyperglyce-
mia (i.e., when blood-glucose levels are especially high) is not
associated with happiness, though there is ample energy in the
bloodstream. Hyperglycemia might not be linked to happiness
because it may reduce the flow of glucose to the brain.
One might conclude that people should rarely expend energy
(e.g., sit on the couch all day) because they generally seek hap-
piness. Though this can occur (e.g., passivity is increasingly
common in modern society), people clearly expend their energy
on a regular basis. Conservation might be reduced because one
must use energy to obtain energy (e.g., work 40 hours each
week to ensure an adequate food supply) and because people
have goals less clearly related to energy (e.g., reproductive
goals). Happiness is having surplus energy in the context of
other meanings and values in life.
One strength of the proposed theory is that it suggests many
novel hypotheses. All else being equal, events that provide
energy will tend to produce greater happiness than will events
that provide less energy or take away energy. People are hap-
pier if there exists the potential to use taxi rides rather than to
always walk. The inefficient acts in which happy people engage
(e.g., play behavior) might be more likely to be perceived as
pointless or wasteful to others. Happy people expend energy
more liberally, and so others might not perceive the value of
these behaviors. The relationship between happiness and energy
could be cyclical. Having energy allows one to more easily
ensure future happiness. For example, a happy person at work
might cheer up another coworker by giving flowers, increasing
the likelihood that the coworker will reward the person in the
future. Approaches to increasing happiness should include
those that free up metabolic resources or provide resources,
such as those that alleviate demands. Chronically unhappy in-
dividuals might have tendencies to overcommit themselves and
rarely experience energy surplus.
In demanding situations, people might expect happy people
to be less happy and to use their energy to help. Displays of
happiness should be perceived negatively when energy is
wasted. Factors should influence happiness partly to the extent
that they create metabolic demands. For example, an argument
that brings to mind new challenges should decrease happiness,
whereas an argument that ends a demanding and draining rela-
tionship should reduce happiness to a lesser extent or even in-
crease happiness. Diabetes and problems with glucose are
linked to being less happy (see above). Other metabolic disor-
ders might therefore be related to happiness. Factors that might
increase the use of glucose include high processing loads, no-
velty, time pressure, and multitasking (Mulder, 1986). These
same factors might reduce happiness. Happiness might arise
from having too much information to process, being over-
whelmed with novelty or experiencing too much change, lack-
ing sufficient time to complete goals, or trying to do too much.
Happiness should be higher across the lifespan during times
when people have more energy. Some studies have found that
younger people tend to be happier than older people (Chang,
2007; Easterlin, 2006; Gerdtham & Johannesson, 2002; Hola-
han, Holahan, Velasquez, & North, 2008; Selim, 2008; cf.
Fugl-Meyer, Branholm, & Fugl-Meyer, 1991), and they also
tend to have more (primary) energy. Whether energy is avail-
able for use might be key in determining happiness. Fat people
have more stored energy than thin people, yet they might not be
happier partly because good physical fitness enhances the dis-
tribution of metabolites throughout the body.
Happiness might increase from terminating goals and not
only from achieving them. Abandoning a failed goal, for in-
stance, might eventually increase happiness because one is able
to use energy that otherwise would have been used toward goal
Energy is concomitant with happiness. Happy people may
signal their happiness by being less energetically efficient or
expending more energy than needed. The happy person sings in
the shower. Typical smiles may use more energy than typical
frowns. And, as demonstrated—happiness puts an inefficient
“pep in one’s step”.
Alesina, A., Tella, R. D., & MacCulloch, R. (2003). Inequality and
happiness: Are Europeans and Americans different? Journal of Pub-
lic Economics, 88, 2009-2042. doi:10.1016/j.jpubeco.2003.07.006
APA (American Psychiatric Association) (1994). Diagnostic and statis-
tical manual of mental disorders. 4th Edition, Washington DC:
American Psychiatric Association, 715-718.
Aschoff, J., & Pohl, H. (1970). Rhythmic variations in energy metabo-
lism. Federation Proceedings, 29, 1541-1542.
Bailey, J. W., & Cohen, L. S. (1999). Prevalence of mood and anxiety
disorders in women who seek treatment for premenstrual syndrome.
Journal of Women’s Health and Gender-Based Medicine, 8, 1181-
Baker, E. R., Best, R. G., Manfredi, R. L., Demers, L. M., & Wolf, G.
C. (1995). Efficacy of progesterone vaginal suppositories in allevia-
tion of nervous symptoms in patients with premenstrual syndrome.
Journal of Assisted Re pr od uc t io n a nd Genetics, 12, 205-209.
Ballas, D., & Dorling, D. (2007). Measuring the impact of major life
events upon happiness. International Journal of Epidemiology, 36,
Barak, Y. (2006). The immune system and happiness. Autoimmunity
Reviews, 5, 523-527. doi:10.1016/j.autrev.2006.02.010
Barglow, P., Hatcher, R., Edidin, D. V., & Sloan-Rossiter, D. (1984).
Stress and metabolic control in diabetes: Psychosomatic evidence
and evaluation of methods. Psychosomatic Medicine , 46, 127-144.
Baumeister, R. F., Bratslavsky, E., Muraven, M., & Tice, D. M. (1998).
Ego depletion: Is the active self a limited resource? Journal of Per-
sonality and Social P sychology, 74, 1252-1265.
Baumeister, R. F., & Leary, M. R. (1995). The need to belong: Desire
for interpersonal attachments as a fundamental human motivation.
Psychological Bulletin, 1 1 7, 497-529.
Baumeister, R. F., Campbell, J. D., Krueger, J. I., & Vohs, K. D. (2003).
Does high self-esteem cause better performance, interpersonal suc-
cess, happiness, or healthier lifestyles? Psychological Science in the
Public Interest, 4, 1-44. doi:10.1111/1529-1006.01431
Benton, D., & Owens, D. (1993). Is raised blood glucose associated
with the relief of tension? Journal of Psychosomatic Research, 37,
Benton, D., Brett, V., & Brain, P. F. (1987). Glucose improves attention
Copyright © 2012 SciRes.
M. T. GAILLIOT
and reaction to frustration in children. Biological Psychology, 24,
Berlyne, D. E. (1974). Studies in the new experimental aesthetics: Steps
toward an objective psychology of aesthetic appreciation. Washing-
ton DC: Hemisphere.
Bisdee, J. T., James, W. P., & Shaw, M. A. (1989). Changes in energy
expenditure during the menstrual cycle. The Britsh Journal of Nutri-
tion, 61, 187-199. doi:10.1079/BJN19890108
Bisdee, J. T., & James, W. P. T. (1983). Whole body calorimetry stud-
ies in the menstrual cycle. New York: Fourth International Confer-
ence on Obesity.
Biswas-Diener, R., & Diener, E. (2006). The subjective well-being of
the homeless, and lessons for happiness. Social Indicators Research,
76, 185-205. doi:10.1007/s11205-005-8671-9
Bloch, M., Schmidt, P. J., & Rubinow, D. R. (1997). Premenstrual
syndrome: Evidence for symptom stability across cycles. American
Journal of Psychiatry, 1 5 4 , 1741-1746.
Bodenhausen, G. V., Kramer, G. P., & Susser, K. (1994). Happiness
and stereotypic thinking in social judgment. Journal of Personality
and Social Psychology, 66, 621-632.
Booth, A. L., & Ours, J. C. V. (2007). Job satisfaction and family hap-
piness: The part-time work puzzle. URL (last checked 21 May 2009).
Booth, R. (1992). An examination of the relationship between happi-
ness, loneliness, and shyness in college students. Journal of College
Student Development, 33, 157-162.
Bornstein, R. F. (1989). Exposure and affect: Overview and meta-
analysis of research, 1968-1987. Psychological Bulletin, 106, 265-
Brebner, J., Donaldson, J., Kirby, N., & Ward, L. (1995). Relationships
between happiness and personality. Personality and Individual Dif-
ferences, 19, 251-258. doi:10.1016/0191-8869(95)00022-X
Bressan, R. A., & Crippa, J. A. (2005). The role of dopamine in reward
and pleasure behaviour—Review of data from preclinical research.
Acta Psychiatrica Scandinavic, 111, 14-21.
Brickman, P., & Campbell, D. T. (1971). Hedonic relativism and plan-
ning the good society. In M. H. Appley (Ed.), Adaptation-level the-
ory (pp. 287-305). New York: Academic Press.
Brim, J. A. (1974). Social network correlates of avowed happiness. The
Journal of Nervous and Mental Disease, 158, 432-439.
Burleson, B. R. (1994). Thoughts about talk in romantic relationships:
Similarity makes for attraction (and happiness, too). Communication
Quarterly, 42, 259-273. doi:10.1080/01463379409369933
Buss, D. M. (2000). The evolution of happiness. American Psychologist,
55, 15-23. doi:10.1037/0003-066X.55.1.15
Cacioppo, J. T., & Winkielman, P. (2001). Mind at ease puts a smile on
the face: Psychophysiological evidence that processing facilitation
elicits positive affect. Journal of Personality and Social Psychology,
81, 989-1000. doi:10.1037/0022-35126.96.36.1999
Cameron, P. (1975). Mood as an indicant of happiness: Age, sex, social
class, and situational differences. Journal of Gerontology, 30, 216-
Chan, Y. K., & Lee, R. P. L. (2006). Network size, social support and
happiness in later life: A comparative study of Beijing and Hong
Kong. Journal of Happiness S tudies, 7, 87-112.
Chang, P. C. (2007). Demographic factors affecting happiness and the
relations between happiness, job satisfaction, organizational com-
mitment, and turnover intention. Thesis, Human Resource Manage-
Checkosky, S. F., & Whitlock, D. (1973). The effects of pattern good-
ness on recognition time in a memory search task. Journal of Ex-
perimental Psychology, 100, 341-348. doi:10.1037/h0035692
Cheng, H., & Furnham, A. (2002). Personality, self-esteem, and demo-
graphic predictions of happiness and depression. Personality and In-
dividual Differences, 34, 921-942.
Cid, A., Ferres, D., & Rossi, M. (2008). Testing happiness hypotheses
among the elderly. Economy Not eboo ks, 27, 23-45.
Collier, W. G., & Hubbard, T. L. (2001a). Judgments of happiness,
brightness, speed and tempo change of auditory stimuli varying in
pitch and tempo. Psychomusic olo gy, 17, 36-55.
Collier, W. G., & Hubbard, T. L. (2001b). Musical scales and evalua-
tions of happiness and awkwardness: Effects of pitch, direction, and
scale mode. American Journal of Psycho logy, 114, 355-375.
Csikszentmihalyi, M., & Hunter, J. (2003). Happiness in everyday life:
The uses of experience sampling. Journal of Happiness Studies, 4,
Cunningham, M. R. (1988). Does happiness mean friendliness? Per-
sonality and Social Psychology Bulletin, 14, 283-297.
Dalton, K. (1999). Preliminary communication-does hormonal contra-
ception increase the risk of postnatal psychosis? The British Journal
of Family Planning, 24, 172.
Desimone, R., Miller, E. K., Chelazzi, L. & Lueschow, A. (1995).
Multiple memory systems in the visual cortex. In M. S. Gazzaniga
(Ed.), The cognitive neurosciences (pp. 475-490). Cambridge, MA:
Devine, P. G. (1989). Stereotypes and prejudice: Their automatic and
controlled components. Journal of Personality and Social Psychol-
ogy, 56, 5-18. doi:10.1037/0022-35188.8.131.52
DeWall, C. N., Baumeister, R. F., Gailliot, M. T., & Maner, J. K.
(2008). Depletion makes the heart grow less helpful: Helping as a
function of self-regulatory energy and genetic relatedness. Personal-
ity and Social Psychology Bullet in , 34, 1653-1662.
DeWall, C. N., Deckman, T., Gailliot, M. T., & Bushman, B. J. (2009).
Sweetened blood cools hot tempers: Physiological self-control and
aggression. Aggressive Behavior, 37, 1, 73-80. doi:10.1002/ab.20366
Di Tella, R., MacCulloch, R. J., & Oswald, A. J. (2001). Preferences
over inflation and unemployment: Evidence from surveys of happi-
ness. The American Economic Review, 91, 335-341.
Diener, E., Horwitz, J., & Emmons, R. A. (1985). Happiness of the
very wealthy. Social Indicators Research, 16, 263-274.
Diener, E., Sandvik, E., & Pavot, W. (1991). Happiness is the fre-
quency, not the intensity of positive versus negative affect. In F.
Strack, M. Argyle, & N. Schwarz (Eds.), Subjective well-being: An
interdisciplinary perspective. Oxford: Pergamon Press.
Drevets, W. C., Gautier, C., Price, J. C., Kupfer, D. J., Kinahan, P. E.,
Grace, A. A. et al. (2001). Amphetamine-induced dopamine release
in human ventral striatum correlates with euphoria. Biological Psy-
chiatry, 49, 81-96. doi:10.1016/S0006-3223(00)01038-6
Dye, L., Warner, P., & Bancroft, J. (1995). Food craving during the
menstrual cycle and its relationship to stress, happiness of relation-
ship and depression: A preliminary group. Journal of Affective Dis-
orders, 34, 157-164. doi:10.1016/0165-0327(95)00013-D
Easterlin, R. A. (1995). Will raising the incomes of all increase the
happiness of all? Journal of Economic Behavior and Organization,
27, 35-47. doi:10.1016/0167-2681(95)00003-B
Easterlin, R. A. (2001). Income and happiness: Towards a unified the-
ory. The Economic Journal, 11 1, 465-484.
Easterlin, R. A. (2003). Explaining happiness. Proceedings of the Na-
tional Academy of Sciences, 1 0 0 , 11176-11183.
Easterlin, R. A. (2003). Happiness of women and men in later life:
Nature, determinants, and prospects. In M. J. Sirgy (Ed.), Advances
in Quality-of-Life Theory and Research (pp. 13-25). The Netherlands:
Easterlin, R. A. (2005). Feeding the illusion of growth and happiness: A
reply to Hagerty and Veenhoven. Social Indicators Research, 74,
Easterlin, R. A. (2006). Life cycle happiness and its sources: Intersec-
tions of psychology, economics, and demography. Journal of Eco-
nomic Psychology, 27, 463-482. doi:10.1016/j.joep.2006.05.002
Copyright © 2012 SciRes. 707
M. T. GAILLIOT
Eren, I., Erdi, Ö., & Özcankaya, R. (2003). Relationship between blood
glucose control and psychiatric disorders in type II diabetic patients.
Turk Psikiyatri Dergisi, 14, 184-191.
Eriksson, O. T. G., Tham, K., & Fugl-Meyer, A. R. (2005). Couple’s
happiness and its relationship to functioning in everyday life after
brain injury. Scandinavian Journal of Occupational Therapy, 12, 40-
Evans, S. M., Haney, M., Levin, F. R., Folton, R. W., & Fischman, M.
W. (1998). Mood and performance changes in women with premen-
strual dysphoric disorder: Acute effects of alprazolam. Neuropsy-
chopharmacology, 19, 499-516.
Fabrykant, M., & Pacella, B. (1948). Labile diabetes: Electroencepha-
lographic status and effect of anticonvulsive therapy. Annals of In-
ternal Medicine, 29, 860-877.
Fairclough, S. H., & Houston, K. (2004). A metabolic measure of men-
tal effort. Biologica l Psychology, 66, 177-190.
Finkel, E. J., & Campbell, W. K. (2001). Self-control and accommoda-
tion in close relationships: An interdependence analysis. Journal of
Personality and Social P s y chology, 81, 263-277.
Fisch, H. U., Frey, S., & Hirsbrunner, H. P. (1983). Analyzing nonver-
bal behavior in depression. Journal of Abnormal Psychology, 92,
Francis, L. J. (1998). Happiness is a thing called stable extraversion: A
further examination of the relationship between the Oxford Happi-
ness Inventory and Eysencks dimensional model of personality and
gender. Personality and Individual Dif ferences, 26, 5-11.
Francis, L. J., & Lester, D. (1997). Religion, personality and happiness.
Journal of Contemporary Religion, 12, 81-86.
Francis, L. J., Brown, L. B., Lester, D., & Philipchalk, R. (1998). Hap-
piness as stable extraversion: A cross-cultural examination of the re-
liability and validity of the Oxford Happiness Inventory among stu-
dents in the UK, USA, Australia, and Canada. Personality and Indi-
vidual Differences, 24, 167-171.
French, S., & Joseph, S. (1999). Religiosity and its association with
happiness, purpose in life, and self-actualisation. Mental Health, Re-
ligion, and Culture, 2, 117-120. doi:10.1080/13674679908406340
Frey, B. S., & Stutzer, A. (2000). Happiness prospers in democracy.
Journal of Happiness Studies, 1, 79-102.
Frey, B. S., & Stutzer, A. (2000). Happiness, economy and institutions.
The Economic Journal, 110, 918-938. doi:10.1111/1468-0297.00570
Fris, R., & Nanjundappa, G. (1986). Diabetes, depression, and em-
ployment status. Social Science and Medicine, 23, 471-475.
Fugl-Meyer, A. R., Branholm, I.-B., & Fugl-Meyer, K. (1991). Happi-
ness and domain-specific life satisfaction in adult northern Swedes.
Clinical Rehabilitation, 5, 25-33. doi:10.1177/026921559100500105
Furnham, A., & Cheng, H. (1999). Personality as predictor of mental
health and happiness in the east and west. Personality and Individual
Differences, 27, 395-403. doi:10.1016/S0191-8869(98)00250-5
Furnham, A., & Petrides, K. V. (2003). Trait emotional intelligence and
happiness. Social Be h a v i o ur and Personality, 31, 815-824.
Gailliot, M. T. (2008). Unlocking the energy dynamics of executive
functioning: Linking executive functioning to brain glycogen. Per-
spectives on Psychological Science, 3, 245-263.
Gailliot, M. T. (2009a). Effortful outgroup interactions impair self-
control via the depletion of glucose: The control of stereotypical
thought and prejudice as metabolically expensive. Submitted.
Gailliot, M. T. (2009a). The effects of glucose drinks on self-control are
not due to the taste of the drink: Glucose drinks replenish self-control.
Manuscript under Review.
Gailliot, M. T. (2009b). Hunger impairs and food improves self-control
in the laboratory and across the world: Reducing world hunger as a
self-control panacea. Submitted.
Gailliot, M. T. (2009c). An increased correspondence bias with low
blood-glucose: Low glucose increases heuristic thought. Manuscript
Gailliot, M. T. (2009d). Improved self-control associated with using
relatively large amounts of glucose: Learning self-control is metab-
olically expensive. Submitted.
Gailliot, M. T. (2009e). Alcohol consumption reduces effortful fatigue
after sleep: Testing a theory of metabolite depletion and subsequent
Gailliot, M. T. (in Press). Mortality salience and metabolism: Glucose
drinks reduce worldview defense caused by mortality salience. Psy-
Gailliot, M. T., & Baumeister, R. F. (2007). The physiology of will-
power: Linking blood glucose to self-control. Personality and Social
Psychology Review, 11, 303-327. doi:10.1177/1088868307303030
Gailliot, M. T. (2009). Using self-control makes people feel things
more. In Preparation.
Gailliot, M. T., Baumeister, R. F., DeWall, C. N., Maner, J. K., Plant, E.
A., Tice, D. M., Brewer, L. E., & Schmeichel, B. J. (2007). Self-
control relies on glucose as a limited energy source: Willpower is
more than a metaphor. Journal of Personality and Social Psychology,
92, 325-336. doi:10.1037/0022-35184.108.40.2065
Gailliot, M. T., Hildebrandt, B., Eckel, L. A., & Baumeister, R. F.
(2010). A theory of limited metabolic energy and premenstrual
syndrome (PMS) symptoms—Increased metabolic demands during
the luteal phase divert metabolic resources from and impair self-
control. Review of General Psychology, 14, 269-282.
Gailliot, M. T., Peruche, B. M., Plant., E. A., & Baumeister, R. F.
(2009). Stereotypes and prejudice in the blood: Sucrose drinks re-
duce prejudice and stereotyping. Journal of Experimental Social
Psychology, 45, 288-290. doi:10.1016/j.jesp.2008.09.003
Gailliot, M. T., Schmeichel, B. J., & Baumeister, R. F. (2006). Self-
regulatory processes defend against the threat of death: Effects of
self-control depletion and trait self-control on thoughts and fears of
dying. Journal o f Personality and Soc i a l Psychology, 91, 49-62.
Gailliot, M. T., Schmeichel, B. J., & Maner, J. K. (2007). Differentiat-
ing the effects of self-control and self-esteem on reactions to mortal-
ity salience. Journal of Experimental Social Psychology, 43, 894-901.
Gallup (2008). Gallup poll.
Gardner, J., & Oswald, A. (2001). Does money buy happiness? A lon-
gitudinal study using data on windfalls. Royal Economic Society.
URL (last checked 13 May 2009).
George, B. J. (2009). A review of treatment approaches to pre-men-
strual syndrome—What do British women perceive to be effective
for their symptoms? URL (last checked 7 May 2009).
George, M. S., Ketter, T. A., Parekh, P. I., Horwitz, B., Herscovitch, P.,
& Post, R. M. (1995). Brain activity diring transient sadness and
happiness in healthy women. American Journal of Psychiatry, 152,
Gerdtham, U. G., & Johannesson, M. (2002). The relationship between
happiness, health, and socio-economic factors: Results based on
Swedish microdata. Journal of Socio- Economics, 30, 553-557.
Gibbs, I., & Sinclair, I. (2000). Bullying, sexual harassment and happi-
ness in residential children’s homes. Child Abuse Review, 9, 247-256.
Gilliland, M. W. (1978). Energy analysis: A new public policy tool.
Boulder, CO: Westview Press.
Gladwell, M. (2009). Outliers. New York: Little, Brown, and Com-
Glenn, N. D., & McLanahan, S. (1982). Children and marital happiness:
Copyright © 2012 SciRes.
M. T. GAILLIOT
A further specification of the relationship. Journal of Marriage and
the Family, 44, 387-398. doi:10.2307/351263
Glenn, N. D., & Weaver, C. N. (1978). A multivariate, multisurvey
study of marital happiness. Journal of Marriage and the Family, 40,
Gold, A. E., MacLeod, K. M., Deary, I. J., & Frier, B. M. (1995). Hy-
poglycemia-induced cognitive dysfunction in diabetes mellitus: Ef-
fect of hypoglycemia unawareness. Physiology and Behavior, 58,
Gonder-Frederick, L. A., Cox, D. J., Bobbitt, S. A., & Pennebaker, J. W.
(1989). Mood changes associated with blood glucose fluctuations in
insulin-dependent diabetes mellitus. Health Psychology, 8, 45-49.
Gordijn, E. H., Hindriks, I., Koomen, W., Dijksterhuis, A., & Van
Knippenberg, A. (2004). Consequences of stereotype suppression
and internal suppression motivation: A self-regulation approach.
Personality and Social Psychology Bulletin, 30, 212-224.
Graham, C., & Pettinato, S. (2001). Happiness, markets, and democracy:
Latin America in comparative perspective. Journal of Happiness
Studies, 2, 237-268. doi:10.1023/A:1011860027447
Griesinger, W. (1876). Die pathologie und therapie der psychischen
krankheiten. Braunschweig: Wreden.
Grinde, B. (2002). Happiness in the perspective of evolutionary psy-
chology. Journal of Happiness Studi es, 3, 331-354.
Gundelach, P., & Kreinar, S. (2004). Happiness and life satisfaction in
advanced European countries. Cross-Cultural Research, 38, 359-386.
Haber, R. N., & Hershenson, M. (1965). The effects of repeated brief
exposures on growth of a percept. Journal of Experimental Psychol-
ogy, 69, 40-46. doi:10.1037/h0021572
Hagerty, M. R. (2000). Social comparisons of income in one’s commu-
nity: Evidence from national surveys of income and happiness. Jour-
nal of Personality and Social Psychology, 78, 764-771.
Hagerty, M. R., & Veenhoven, R. (2003). Wealth and happiness revis-
ited—Growing national income does go with greater happiness. So-
cial Indicators Research, 64, 1-27. doi:10.1023/A:1024790530822
Halberstadt, J., & Rhodes, G. (2000). The attractiveness of nonface
averages: Implications for an evolutionary explanation of the attrac-
tiveness of average faces. Psychological Scien ce, 4, 285-289.
Haller, M., & Hadler, M. (2006). How social relations and structures
can produce happiness and unhappiness: An international compara-
tive analysis. Social Indicators Research, 75, 169-216.
Hamer, D. H. (1996). The heritability of happiness. Nature Genetics, 14,
Harrison, A. A. (1977). Mere exposure. In L. Berkowitz (Ed.), Advan-
ces in experimental social psychology (pp. 39-83). New York: Aca-
Hartlage, S. A., & Arduino, K. E. (2002). Toward the content validity
of premenstrual dysphoric disorder: Do anger and irritability more
than depressed mood represent treatment-seekers’ experiences? Psy-
chological Reports, 90, 189-202. doi:10.2466/pr0.2002.90.1.189
Hartog, J., & Oosterbeek, H. (1998). Health, wealth and happiness:
Why pursue a higher education? Economics of Education Review, 17,
Haybron, D. M. (2008). Happiness, the self and human flourishing.
Utilitas, 20, 21-49. doi:10.1017/S0953820807002889
Hepburn, D. A., Deary, I. J., MacLeod, K. M., & Frier, B. M. (1996).
Adrenaline and psychometric mood factors: A controlled case study
of two patients with bilateral adrenalectomy. Personality and Indi-
vidual Differences, 20, 451-455. doi:10.1016/0191-8869(95)00191-3
Hessemer, V., & Bruck, K. (1985). Influence of menstrual cycle on
thermoregulatory, metabolic, and heart rate responses to exercise at
night. Journal of Applied Physiology, 59, 1911-1917
Hills, P., & Argyle, M. (2001). Happiness, introversion-extraversion
and happy introverts. Personality and Individual Differences, 30,
Holahan, C. K., Holahan, C. J., Velasquez, K. E., & North, R. J. (2008).
Longitudinal change in happiness during aging: The predictive role
of positive expectancies. The International Journal of Aging and
Human Development, 66, 229-241. doi:10.2190/AG.66.3.d
Jacoby, L. L., & Dallas, M. (1981). On the relationship between auto-
biographical memory and perceptual learning. Journal of Experi-
mental Psychology: General , 110, 306-340.
James, G. D., Yee, L. S., Harshfield, G. A., Blank, S. G., & Pickering,
T. G. (1986). The influence of happiness, anger, and anxiety on the
blood pressure of borderline hypertensives. Psychosomatic Medicine,
Johnson, W., & Krueger, R. F. (2006). How money buys happiness:
Genetic and environmental processes linking finances and life satis-
faction. Journal of Personality and Social P s y c h o l o g y, 90, 680-691.
Johnstone, R. A. (1994). Female preference for symmetrical males as a
by-product of selection for mate recognition. Nature, 372, 172-175.
Jonas, E., & Fischer, P. (2006). Terror management and religion: Evi-
dence that intrinsic religiousness mitigates worldview defense fol-
lowing mortality salience. Journal of Personality and Social Psy-
chology, 91, 553-567. doi:10.1037/0022-35220.127.116.113
Jopp, D., & Rott, C. (2006). Adaptation in very old age: Exploring the
role of resources, beliefs, and attitudes for centenarians’ happiness.
Psychology and Aging, 21, 266-280.
Joseph, S., & Lewis, C. A. (1998). The depression-happiness scale:
Reliability and validity of a bipolar self-report scale. Journal of
Clinical Psychology, 5 4, 537-544.
Kammann, R., & Flett, R. (1983). Affectometer 2: A scale to measure
current level of general happiness. Australian Journal of Psychology,
35, 259-265. doi:10.1080/00049538308255070
Kehle, T. J., & Bray, M. A. (2003). RICH theory: The promotion of
happiness. Psychology in the Scho ol s, 41, 43-49.
Kraepelin, E. (1913). Psychiatrie—Ein lehrbuch fur studierende und
aerzte. Leipzig: Barth.
Landgren, B. M., Unden, A. L., & Diczfalusy, E. (1980). Hormonal
profile of the cycle in 68 normally menstruating women. Acta Endo-
crinologia, 94, 89-98.
Lane, R. E. (1994). The road not taken: Friendship, consumerism, and
happiness. Critical Review, 8, 521-554.
Lane, R. E. (2000). Diminishing returns to income, companionship and
happiness. Journal of Ha ppi nes s S tudies, 1, 103-119.
Langlois, J. H., & Roggman, L. A. (1990). Attractive faces are only
average. Psychological Science, 1, 115-121.
Leary, M. R., & Baumeister, R. F. (2000). The nature and function of
self-esteem: Sociometer theory. Advances in Experimental Social
Psychology, 32, 1-62. doi:10.1016/S0065-2601(00)80003-9
Leith, K. P., & Baumeister, R. F. (1996). Why do bad moods increase
self-defeating behavior? Emotion, risk taking, and self-regulation.
Journal of Personality a nd Social Psychology, 71, 1250-1267.
Lelkes, O. (2005). Tasting freedom: Happiness, religion and economic
transition. Journal of Economic Behavior and Organization, 59, 173-
Lewis, C. A., Lanigan, C., Joseph, S., & Fockert, J. D. (1997). Religi-
osity and happiness: No evidence for an association among under-
graduates. Person ality and Individual Differences, 22, 119-121.
Lewis, C. A., Maltby, J., & Burkinshaw, S. (2000). Religion and hap-
piness: Still no association. Journal of Beliefs and Values, 21, 233-
Limosin, F., Gorwood, P., & Ades, J. (2001). Clinical characteristics of
familial versus sporadic alcoholism in a sample of male and female
Copyright © 2012 SciRes. 709
M. T. GAILLIOT
patients. European Psychiatry, 16, 151-156.
Lotka, A. J. (1922). Contribution to the energetics of evolution. Pro-
ceedings of the National Academy of Science, 8, 147-151.
Lu, L. (1999). Personal or environmental causes of happiness: A longi-
tudinal analysis. The Journal of Social Psychology, 139, 79-90.
Lu, L., & Shih, J. B. (1997). Personality and happiness: Is mental health
a mediator? Personality and Individual Differences, 22, 249-256.
Lu, L., & Shih, J. B. (1997). Sources of happiness: A qualitative ap-
proach. The Journal of Social Psychology, 137, 181-187.
Lu, L., Shih, J. B., Lin, Y. Y., & Ju. L. S. (1997). Personal and envi-
ronmental correlates of happiness. Personality and Individual Dif-
ferences, 23, 453-462. doi:10.1016/S0191-8869(97)80011-6
Lucas, R. E., Clark, A. E., Georgellis, Y., & Diener, E. (2003). Reex-
amining adaptation and the set point model of happiness: Reactions
to changes in marital status. Journal of Personality and Social Psy-
chology, 84, 527-539. doi:10.1037/0022-3518.104.22.1687
Lustman, P. J., Griffith, L. S., Clouse, R. E., & Cryer, P. E. (1986).
Psychiatric illness in diabetes mellitus: Relationship to symptoms
and glucose control. Journal of Nervous and Mental Disease, 174,
Lykken, D., & Tellegen, A. (2006). Happiness is a stochastic phe-
nomenon. Psychological Science, 7, 186-189.
Lyubomirsky, S., King, L., & Diener, E. (2005). The benefits of fre-
quent positive affect: Does happiness lead to success? Psychological
Bulletin, 131, 803-855. doi:10.1037/0033-2909.131.6.803
Lyubomirsky, S., Sheldon, K. M., & Schkade, D. (2005). Pursuing
happiness: The architecture of sustainable change. Review of General
Psychology, 9, 111-131. doi:10.1037/1089-2622.214.171.124
Manusov, E. G., Carr, R. J., Rowane, M., Beatty, L. A., & Nadeau, M.
T. (1995). Dimensions of happiness: A qualitative study of family
practice residents. The Journal of the American Board of Family
Practice, 8, 367-375.
Marinic, M., & Brkljacic, T. (2008). Love over gold—The correlation
of happiness level with some life satisfaction factors between persons
with and without physical disability. Journal of Developmental and
Physical Disabilities, 20, 527-540. doi:10.1007/s10882-008-9115-7
Martindale, C. & Moore, K. (1988). Priming, prototypicality, and pref-
erence. Journal of Experimental Psychology: Human Perception and
Performance, 14, 661-670. doi:10.1037/0096-15126.96.36.1991
Masicampo, E. J., & Baumeister, R. F. (2008). Toward a physiology of
dual-process reasoning and judgment: Lemonade, willpower, and
expensive rule-based analysis. Psychological Scienc e, 19, 255-260.
Mathes, E. W., & Kahn, A. (1975). Physical attractiveness, happiness,
neuroticism, and self-esteem. Journal of Psychology, 90, 27-30.
Mathieu, S. I. (2008). Happiness and humor group promotes life satis-
faction for senior center participants. Activities, Adaptation, and Ag-
ing, 32, 134-148. doi:10.1080/01924780802143089
Matsubayashi, K., Kimura, S., Iwasaki, T., Okumiya, S., Hamada, T.,
Fujisawa, M. et al. (1992). Evaluation of subjective happiness in the
elderly using a visual analogue scale of happiness in correlation with
depression scale. Nippon Ronen Iqakkai Zasshi, 29, 811-816.
Mayo, J. L. (1997). Premenstrual Syndrome: A natural approach to
management. Applied Nutritional Science Reports, 5, 1-8.
McCrimmon, R. J., Frier, B. M., & Deary, I. J. (1999). Appraisal of
mood and personality during hypoglycemia in human subjects.
Physiology and Behavior, 67, 27-33.
McGreal, R., & Joseph, S. (1993). The depression-happiness scale.
Psychological Reports, 73, 1279-1282.
McLanahan, S., & Adams, J. (1987). Parenthood and psychological
well-being. A nn ua l Review of Sociology, 13, 237-257.
Michalos, A. C. (1980). Satisfaction and happiness. Social Indicators
Research, 8, 385-422. doi:10.1007/BF00461152
Michalos, A. C. (1983). Satisfaction and happiness in a rural northern
resource community. Social Indicators Research, 13, 225-252.
Mihalce, R., & Liu, H. (2006). A corpus-based approach to finding
Moller, V., & Jackson, A. (1997). Perceptions of service delivery and
happiness. Development Southern Africa, 14, 169-184.
Mookherjee, H. N. (1998). Perception of happiness among elderly
persons in metropolitan USA. Perceptual and Motor Skills, 87, 787-
Moore, B. S., Clybrun, A., & Underwood, B. (1976). The role of affect
in delay of gratification. Child Development, 47, 273-276.
Mueller, P. S., Heninger, G. R., & McDonal, R. K. (1968). Intravenous
glucose tolerance test in depression. Archives of General Psychiatry,
21, 470-477. doi:10.1001/archpsyc.1969.01740220086010
Mukherjee, D., & Basu, S. (2008). Correlates of happiness among
young adults. National Academy of Psychology, India, 53, 67-71.
Mulder, G. (1986). The concept and measurement of mental effort. In G.
R. J. Hockey, A. W. K. Gaillard, M. G. H. Coles (Eds.), Energetical
issues in research on human information processing (pp. 175-198).
Dordrecht, The Netherlands: Martinus Nijhoff.
Muraven, M., & Slessareva, E. (2003). Mechanisms of self-control
failure: Motivation and Limited Resources. Personality and Social
Psychology Bulletin, 29, 894-906.
Muraven, M., Tice, D. M., & Baumeister, R. F. (1998). Self-control as
a limited resource: Regulatory depletion patterns. Journal of Person-
ality and Social Psychology, 74, 774-789.
Namazie, C., & Sanfey, P. (1998). Happiness in transition: The case of
Kyrgyzstan. Review of Developmental Economics, 5, 392-405.
Natale, V., & Albertazzi, P. (2006). Mood swings across the menstrual
cycle: A comparison between oral contraceptive users and non-users.
Biological Rhythm Rese ar c h , 37, 489-495.
Natvig, G. K., Albrektsen, G., & Qvarnstrom, U. (2003). Associations
between psychosocial factors and happiness among school adoles-
cents. International Journal of Nursing Pract ic e , 9, 166-175.
Nesse, R. M. (2004). Natural selection and the elusiveness of happiness.
Philosophical Transactions of the Royal Society of London B, 359,
Neto, F. (2001). Personality predictors of happiness. Psychological Re-
ports, 88, 817-824. doi:10.2466/pr0.2001.88.3.817
Nicolson, P. (1999). Loss, happiness and postpartum depression: The
ultimate paradox. Canadian Psychology, 40, 162-178.
North, R. J., Holahan, C. J., Moos, R. H., & Cronkite, R. C. (2008).
Family support, family income, and happiness: A 10-year perspec-
tive. Journal of Family Ps yc holo gy, 22, 475-483.
Odum, H. T. (1995). Self-organization and maximum empower. In C.
A. S. Hall (Ed.), Maximum power: The ideas and applications of H.
T. Odum. Colorado: Colorado University Press.
Orden, S. R., & Bradburn, N. M. (1969). Working wives and marriage
happiness. American Journal of Sociology, 74, 392-407.
Ortega, S. T., Whitt, H. P., & Williams, J. A. (1988). Religious ho-
mogamy and marital happiness. Journal of Family Issues, 9, 224-239.
Oswald, A., & Powdthavee, N. (2008). Death, happiness, and the cal-
culation of compensatory damages. The Journal of Legal Studies, 37,
Copyright © 2012 SciRes.
M. T. GAILLIOT
Oswald, A. J., & Powdthavee, N. (2008). Does happiness adapt? A
longitudinal study of disability with implications for economists and
judges. Journal of Public Economics, 92, 1061-1077.
Palmer, S. E. (1991). Goodness, gestalt, groups, and garner: Local
symmetry subgroups as a theory of figural goodness. In J. R. Pom-
erantz, & G. R. Lockhead (Eds.), Perception of structure (pp. 23-40).
Washington DC: American Psychological Association.
Park, N., & Peterson, C. (2006). Character strengths and happiness
among young children: Content analysis of parental descriptions.
Journal of Happiness Studies, 7, 323-341.
Perneger, T. V., Hudelson, P. M., & Bovier, P. A. (2004). Health and
happiness in young Swiss adults. Quality of Life Research, 13, 171-
Peterson, C., Ruch, W., Beermann, U., Park, N., & Seligman, M. E. P.
(2007). Strengths of character, orientations to happiness, and life sat-
isfaction. The Jour n al of Positive Psychology, 2, 149-156.
Phillips, D. L. (1967). Mental health status, social participation, and
happiness. Mental Health and Happ iness, 72, 479-488.
Phillips, D. L. (1967). Social participation and happiness. American
Journal of Sociology, 72, 479-488. doi:10.1086/224378
Pickford, J. H., Signori, E. I., & Rempel, H. (1966). Similar of related
personality traits as a factor in marital happiness. Journal of Mar-
riage and the Family, 28, 191-192. doi:10.2307/349280
Pina, D. L., & Bengtson, V. L. (1993). The division of household labor
and wives’ happiness: Ideology, employment, and perceptions of
support. Journal of Ma rr iag e an d th e Family, 55, 901-912.
Popkin, M. K., Callies, A. L., Lentz, R. D., Colon, E. A., & Sutherland,
D. E. (1988). Prevalence of major depression, simple phobia, and
other psychiatric disorders in patients with long standing type I dia-
betes mellitus. Archives of General Psychiatry, 45, 64-68.
Posner, M. I., & Keele, S. W. (1968). On the genesis of abstract ideas.
Journal of Experimental Ps ych olog y, 77, 353-363.
Rabin, C., & Shapira-Berman, O. (1997). Egalitarianism and marital
happiness: Israeli wives and husbands on a collision course? The
American Journal of Family Therapy , 25, 319-330.
Rapkin, A. (2003). A review of treatment of premenstrual syndrome &
premenstrual dysphoric disorder. Psychoneuroendocrinology, 28, 39-
Reber, R., Winkielman, P., & Schwarz, N. (1998). Effects of perceptual
fluency of affective judgments. Psychological Science, 9, 45-48.
Reid, M., & Hammersley, R. (1995) Effects of carbohydrate intake on
subsequent food intake and mood state. Physiology and Behavior, 58,
Rhodes, G., & Tremewan, T. (1996). Averageness, exaggeration, and
facial attractiveness. Psychological Science, 7, 105-110.
Rogers, S. J., & DeBoer, D. D. (2001). Changes in wives’ income:
Effects of marital happiness, psychological well-being, and the risk
of divorce. Journal of Marriage a nd the Family, 63, 458-472.
Rosch, E., & Lloyd, B. B. (1978). Cognition and categorization. Hills-
dale, NJ: Erlbaum.
Roysamb, E., Tambs, K., Reichborn-Kjennerud, T., Neale, M. C., &
Harris, J. R. (2003). Happiness and health: Environmental and ge-
netic contributions to the relationship between subjective well-being,
perceived health, and somatic illness. Journal of Personality and So-
cial Psychology, 85, 1136-1146. doi:10.1037/0022-35188.8.131.526
Rubinow, D. R., Roy-Byrne, P., Hoban, M. C., Grover, G. N., Stambler,
N., & Post, R. M. (1986). Premenstrual mood changes. Characteristic
patterns in women with and without premenstrual syndrome. Journal
of Affective Disorders, 10, 85-90.
Ryuichi, K., Takaaki, D., Akihiro, Y., Masanobu, O., Koki, T., Motomi,
S., & Eiji, K. (1999). Happiness and background factors in commu-
nity-dwelling older persons. Japanese Journal of Geriatrics, 36, 861-
Saunders, P. (2009). Income, health, and happiness. Ideas. URL (last
checked 21 May 2009).
Schmeichel, B. J., Vohs, K. D., & Baumeister, R. F. (2003). Intellectual
performance and ego depletion: Role of the self in logical reasoning
and other information processing. Journal of Personality and Social
Psychology, 85, 33-46. doi:10.1037/0022-35184.108.40.206
Schmeichel, B. J., Demaree, H. A., Robinson, J. L., & Pu, J. (2006).
Ego depletion by response exaggeration. Journal of Experimental
Social Psychology, 42, 95-102. doi:10.1016/j.jesp.2005.02.005
Scholey, A. B., & Kennedy, D. O. (2004). Cognitive and physiological
effects of an “energy drink”: An evaluation of the whole drink and of
glucose, caffeine and herbal flavouring fractions. Psychopharmacol-
ogy, 17, 320-330. doi:10.1007/s00213-004-1935-2
Schwartz, B., Ward, A., Monterosso, J., Lyubomirsky, S., White, K., &
Lehman, D. R. (2002). Maximizing versus satisficing: Happiness is a
matter of choice. Journal of Personality and Social Psychology, 83,
Schwarz, J. C., & Pollack, P. R. (1977). Affect and delay of gratifica-
tion. Journal of Research in P ersonality, 11, 147-164.
Schyns, P. (1998). Crossnational differences in happiness: Economic
and cultural factors explored. Social Indicators Research, 43, 3-26.
Selim, S. (2008). Life satisfaction and happiness in Turkey. Social
Indicators Research, 88, 531-562. doi:10.1007/s11205-007-9218-z
Shamosh, N. A., & Gray, J. R. (2007). The relation between fluid intel-
ligence and self-regulatory depletion. Cognition and Emotion, 21,
Shin, D. C., & Johnson, D. M. (1978). Avowed happiness as an overall
assessment of the quality of life. Social Indicators Research, 5, 475-
Singh, N. N., Lancioni, G. E., Winton, A. S. W., Wahler, R. G., Singh,
J., & Sage, M. (2004). Mindful caregiving increases happiness
among individuals with profound multiple disabilities. Research in
Developmental Disabiliti es, 25, 207-218.
Smith, A. P., Clarka, R., & Gallaghera, J. (1999). Breakfast cereal and
caffeinated coffee effects on working memory, attention, mood, and
cardiovascular function. Physiology & Behavior, 67, 9-17.
Solomon, S. J., Kurzer, M. S., & Calloway, D. H. (1982). Menstrual
cycle and basal metabolic rate in women. The American Journal of
Clinical Nutrition, 3 6, 611-616.
Stack, S., & Eshleman, J. R. (1998). Marital status and happiness: A
17-nation study. Journal of Mar r iage and Family, 60, 527-536.
Steel, P., & Ones, D. S. (2002). Personality and happiness: A national-
level analysis. Journal of Personality and Social Psychology, 83,
Storm, C. (1996). Aspects of meaning in words related to happiness.
Cognition and Emotion, 10, 279-302. doi:10.1080/026999396380259
Stutzer, A. (2004). The role of income aspirations in individual happi-
ness. Journal of Economic Be h avior and O rgani zation, 54, 89-109.
Suitor, J. J. (1987). Marital happiness of returning women students and
their husbands: Effects of part and full-time enrollment. Research in
Higher Education, 27, 311-331. doi:10.1007/BF00991661
Swinyard, W. R., Kau, A.-K., & Phua, H.-Y. (2001). Happiness, mate-
rialism, and religious experience in the US and Singapore. Journal of
Happiness Studies, 2, 13-32. doi:10.1023/A:1011596515474
Symonds, C. S., Gallagher, P., Thompson, J. P., & Young, A. H. (2004).
Effects of the menstrual cycle on mood, neurocognitive and neuro-
endocrine function in healthy premenopausal women. Psychological
Medicine, 34, 93-102. doi:10.1017/S0033291703008535
Taylor, L. A. & Rachman. S. J. (1988). The effects of blood sugar level
changes on cognitive function, affective state, and somatic symptoms.
Copyright © 2012 SciRes. 711
M. T. GAILLIOT
Copyright © 2012 SciRes.
Journal of Behavioral Medici ne , 11, 279-291.
Tella, R. D., & MacCulloch, R. (2007). Gross national happiness as an
answer to the Easterlin Paradox? Journal of Developmental Eco-
nomics, 86, 22-42. doi:10.1016/j.jdeveco.2007.06.008
Tella, R. D., MacCulloch, R. J., & Oswald, A. J. (2003). The macro-
economics of happiness. The Review of Economics and Statistics, 85,
Tella, R. D., New, J. H.-D., & MacCulloch, R. (2007). Happiness ad-
aptation to income and to status in an individual panel. URL (last
checked 13 May 2009). http://ssrn.com/abstract=992162
Tice, D. M., Baumeister, R. F., Shmueli, D., & Muraven, M. (2007).
Restoring the self: Positive affect helps improve self-regulation fol-
lowing ego depletion. Journal of Experimental Social Psychology, 43,
Tice, D. M., Bratslavsky, E., & Baumeister, R. F. (2001). Emotional
distress regulation takes precedence over impulse control: If you feel
bad, do it! Journal of Personality and Social Psychology, 80, 53-67.
Tkach, C., & Lyubomirsky, S. (2006). How do people pursue happiness?
Relating personality, happiness-increasing strategies, and well-being.
Journal of Happiness Studies, 7, 183-225.
Tsou, M. W., & Liu, J. T. (2001). Happiness and domain satisfaction in
Taiwan. Journal of Happiness Studies, 2, 269-288.
Uchida, Y., Norasakkunkit, V., & Kitayama, S. (2004). Cultural con-
structions of happiness: Theory and empirical evidence. Journal of
Happiness Studies, 5, 223-239. doi:10.1007/s10902-004-8785-9
Van Pragg, H. M., & Leijnse, B. (1965). Depression, glucose tolerance,
peripheral glucose uptake and their alterations under the influence of
anti-depressive drugs of the hydrazine type. Psychopharmacologica,
8, 67-78. doi:10.1007/BF00405362
Veenhoven, R. (1988). The utility of happiness. Social Indicators Re-
search, 20, 333-354. doi:10.1007/BF00302332
Veenhoven, R. (1991). Is happiness relative? Social Indicators Resear-
ch, 24, 1-34. doi:10.1007/BF00292648
Vohs, K. D., Baumeister, R. F., & Ciarocco, N. J. (2005). Self-regula-
tion and self-presentation: Regulatory resource depletion impairs
impression management and effortful self-presentation depletes
regulatory resources. Journal of Personality and Social Psychology,
88, 632-657. doi:10.1037/0022-35220.127.116.112
Ward, R. A. (1993). Marital happiness and household equity in later life.
Journal of Marriage and Family, 55, 427-438. doi:10.2307/352813
Webb, P. (1981). Increased levels of energy exchange in women after
ovulation. The Physiologist, 24, 43.
Webb, P. (1986). 24-hour energy expenditure and the menstrual cycle.
The American Journal of Clinical Nut r it i o n, 44, 614-619.
Weinhold, D. (2008). How big a problem is noise pollution? A brief
happiness analysis by a perturbable economist. URL (last checked 22
Weiss, A., Bates, T. C., & Luciano, M. (2008). Happiness is a per-
sonal(ity) thing: The genetics of personality and well-being in a rep-
resentative sample. Psychological Science, 19 , 205-210.
Wells, K. B., Golding, J. M., & Burnam, M. A. (1989). Affective sub-
stance use, and anxiety disorders in persons with arthritis, diabetes,
heart disease, high blood pressure, or chronic lung conditions. Gen-
eral Hospital Psychiatry, 11, 320-327.
Welsch, H. (2008). The social costs of civil conflict: Evidence from
surveys of happiness. Kyklo s, 61, 320-340.
White, L. K., Booth, A., & Edwards, J. N. (1986). Children and marital
happiness. Journal o f Family Issues, 7, 131-147.
Whittlesea, B. W. A. (1993). Illusions of familiarity. Journal of Ex-
perimental Psychology : Learning, Memory, and Cognitio n , 1 9, 1235-
Whittlesea, B. W. A., Jacoby, L. L., & Girard, K. (1990). Illusions of
immediate memory: Evidence of an attributional basis for feelings of
familiarity and perceptual quality. Journal of Memory and Language,
29, 716-732. doi:10.1016/0749-596X(90)90045-2
Wikipedia (2012). Wikipedia entries for dopamine, acetylcholine,
GABA, and glutamate. www.wikipedia.org
Wilson, D. R. (1951). Electroencephalographic studies in diabetes
mellitus. Canadia n Medical Association Journal, 65 , 462-465.
Witherspoon, D., & Allan, L. G. (1985). The effects of a prior presenta-
tion on temporal judgments in a perceptual identification task. Mem-
ory and Cognition, 13, 103-111. doi:10.3758/BF03197003
World Bank (1997). World values survey. World Development Report.
Wredling, R. A. M., Theorell, P. G. T., Roll, M. H., Lins, P. E. S., &
Adamson, U. K. C. (1992). Psychosocial state of patients with IDDM
prone to recurrent episodes of severe hypoglycemia. Diabetes Care,
75, 518-521. doi:10.2337/diacare.15.4.518
Yaryura-Tobias, J. A., & Neziroglu, F. A. (1975). Violent behavior,
brain dysrhythmia, and glucose dysfunction: A new syndrome. Jour-
nal of Orthomolecular Psychi a t ry, 4, 182-188.
Yu, D. C. T., Spevack, S., Hiebert, R., Martin, T. L., Goodman, R.,
Martin, T. et al. (2002). Happiness indices among persons with pro-
found and severe disabilities during leisure and work activities: A
comparison. Education and Training in Mental Retardation and De-
velopmental Disabilities, 37, 421-426.
Zajonc, R. B. (1968). Attitudinal effects of mere exposure. Journal of
Personality and Social Psycho l o g y : Monograph Supplemen t , 9, 1-27.
Zajonc, R. B. (2001). Mere exposure: An unmediated process. URL
(last checked 5 November 2001).
Zajonc, R. B. (2002). Mere exposure: A gateway to the subliminal.
Current Directions in Psychological Science, 10, 224-228.
Zhao, G., Wang, L., Qu, C., & Wang, X. (1998). Personality and cli-
macteric syndrome in women. Chinese Mental Health Journal, 12,