Simultaneous Presentation of Similar Stimuli Produces Perceptual Learning in Human Picture Processing

Mundy, Matthew Edward, Honey, Robert Colin ORCID: https://orcid.org/0000-0001-6870-1880 and Dwyer, Dominic M. ORCID: https://orcid.org/0000-0001-8069-5508 2007. Simultaneous Presentation of Similar Stimuli Produces Perceptual Learning in Human Picture Processing. Journal of Experimental Psychology: Animal Behavior Processes 33 (2) , pp. 124-138. 10.1037/0097-7403.33.2.124

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Abstract

Human participants received unsupervised exposure to difficult-to-discriminate stimuli (e.g., A and A′), created with a morphing procedure from photographs of faces, before learning a discrimination between them. Experiments 1 and 2 demonstrated that prior exposure enhanced later discrimination and that intermixed exposure (A, A′, A, A′...) resulted in better subsequent discrimination than blocked exposure (B, B, ...B′, B′...). Experiments 3 and 4 showed that simultaneous exposure to 2 similar stimuli facilitated the later acquisition of both a simultaneous and a successive discrimination, and this effect was observed even though simultaneous exposure to 2 stimuli fostered the development of an excitatory association between them (Experiment 5). The findings of Experiments 1 and 2 revealed a perceptual learning effect with pictures of faces, and the findings of Experiments 3-5 are difficult to reconcile with associative analyses of perceptual learning.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Publisher:	American Psychological Association
ISSN:	0097-7403
Last Modified:	01 Dec 2022 11:05
URI:	https://orca.cardiff.ac.uk/id/eprint/3373

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