| Procedure | Models | Researches | Format | Comments & suggestions |
| Theoretical assumptions | Attention assumption | Chen et al., 2011; Leung & Williams, 2006; Williams, 2004; Williams, 2005 | Not clear in most of researches. | Assumptions of each procedure had better be discussed. |
| Clinical stimuli | Artificial grammar | Starter: Reber, 1967; Variants: Berry & Dienes, 1993; Leung & Williams, 2006; Pothos, 2007; Reber, 1989; Shanks, 2005; Wan et al., 2008; Williams, 2004; | Computerized/pen & paper | More interesting to reduce subjects’ nerve; more close to nature language in nature context with semantic and pragmatic features taken into consideration |
| Sequence strings | Starter: Nissen and Bullemer, 1987; Variants: Cleeremans & McClelland, 1991; Clegg et al., 1998; Fu et al., 2008, 2010; | Computerized | ||
| Exposure | Implicit goal not mentioned + activities with connection to implicit features | Clegg et al., 1998; Cleeremans & McClelland, 1991; Nissen & Bullemer, 1987; Rieckman & Bäckman, 2009 | Computerized/pen & paper | Researchers need to ensure no attention to implicit feature, to reduce any kind of probability that might arouse attention to implicit features, or even to try to distract attention from implicit features; but all should be done with subjects in an initiative state. |
| Explicit goal + explicit goal training + activities with connection to implicit features + implicit goal not mentioned | Leung & Williams, 2006 | Computerized/pen & paper | ||
| Explicit goal + explicit goal training + implicit goal not mentioned | Williams (2004), and Chen et al. (2011) | Computerized/pen & paper | ||
| Only stimuli + implicit goal not mentioned | Elman, 1990; Perruchet & Vinter, 1998; Sun, 2002 | Computerized/pen & paper | ||
| Learning testing | Classical test | Chen et al., 2011; Dienes & Altmann, 1997; Reber, 1967; Wan et al., 2008; Williams, 2004 | Computerized/pen & paper | Providing retrieval cues; avoiding being hints or drawing attention to implicit feature |
| SRT | Cleeremans & McClelland, 1991; Clegg et al., 1998; Jiménez et al., 1996; Leung & Williams, 2006; Nissen & Bullemer, 1987 | Computerized | Testing items should be more scientific avoid being hints or drawing attention to implicit feature; trying to distinct explicit knowledge form implicit one | |
| Computational model | Perruchet & Vinter, 1998; Sun, 2002 | Computerized | Trying in symbol processing models |