| Model | Sub-model | Researches | Techniques | Strength | Weakness | |
| Verbal reports | Free reporting | Abrams & Reber, 1988; Dienes et al., 1991; Leung & Williams, 2006; Payne, 1994; Williams, 2004 | Interview; open questions | Subjects can say what they want; sounds like with no information omitted. | Dissociation between acquired knowledge and its verbalizability; insensitive and incomplete measure of awareness; | |
| Closed questionnaire | Berry & Broadbent, 1984; Broadbent, 1977 | Multiple choice | Focus on the state features of subjects wanted by the research | |||
| Objective test | Offline objective test | Holender, 1986; Stadler, 1998 | Forced-choice test, or free generation task | Providing retrieval cues; more sensitive to conscious knowledge. | Lack of exclusivity; underestimating the influence of unconscious knowledge | |
| Computational objective test | O’Brien & Opie, 1999; Shanks, 1997 | Symbol-processing system to distinct implicit and explicit knowledge | Completely objective and self-controlled | Not widely used and still under the way of polishing | ||
| Subjective test | Chen et al., 2011; Dienes, 2008; Dienes & Berry, 1997; Dienes & Scott, 2005 | Confidence ratings; source attributions; binary confidence technique; SDT measure of sensitivity; | Exclusivity; sensitivity; more easily to absorb scientific or new techniques | Difficulty in selection of the type of confidence scale; lack of a standardized procedure |
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