References

         Greenwald, A.G. (1992). New look 3: Unconscious cognition revisited. American Psychologist, 47, 766-779.
          Greenwald, A.G., Draine, S.C., & Abrams, R.L. (1996). Three cognitive markers of unconscious semantic activation.
Science, 273, 1699-1702.
          Greenwald, A.G., Klinger, M.R., & Liu, T.J. (1995). Activation by marginally perceptible ("subliminal") stimuli: Dissociation of unconscious from conscious perception.
Journal of Experimental Psychology: General, 124, 22-42.
          Hintzman, D.L. (1986). "Schema abstraction" in a multiple-trace memory model.
Psychological Review, 93, 411-428.
          Reber, A.S. (1989). Implicit learning and tacit knowledge.
Journal of Experimental Psychology: General, 118, 219-235.
          Sloman, S.A. (1996). The empirical case for two systems of reasoning.
Psychological Bulletin, 119, 3-22.