title: Effects of color and pattern on implicit and explicit picture memory.
abstract: The degree to which repetition priming is perceptually specific is informative about the mechanisms of implicit memory as well as of perceptual processing. In 2 sets of experiments with pictures as stimuli, we tested the effects of color and pattern manipulations between study and test on implicit memory (i.e., naming facilitation) and explicit memory (i.e., 2 forms of recognition). These manipulations did not affect priming. However, participants were able to explicitly detect stimulus changes at above-chance levels. Changes in color also produced small decrements in participants' ability to judge that repeated stimuli were old on a recognition test. Experiment 2 showed diminished priming with changes in the stimulus exemplar (i.e., a different picture of the same named object) from study to test, which demonstrated that the picture-naming paradigm is sensitive to changes in physical attributes. The results suggest that physical attributes that are not essential to the formation of a shape representation do not influence repetition priming in a basic identification paradigm. Suggestions for how priming may be mediated are discussed.
authors.affiliation: Department of Psychology, Vanderbilt University, Nashville, Tennessee 37240, USA. cavecb@ctrvax.vanderbilt.edu
authors.forename: C B
authors.initials: CB
authors.lastname: Cave
authors.forename: P R
authors.initials: PR
authors.lastname: Bost
authors.forename: R E
authors.initials: RE
authors.lastname: Cobb
mesh_terms: D000328:Adult; D001245:Association Learning; D001288:Attention; D003118:Color Perception; D004193:Discrimination Learning; D005260:Female; D006801:Humans; D008297:Male; D011939:Mental Recall; D010364:Pattern Recognition, Visual; D011930:Reaction Time