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01-03-2010 | Original Article | Uitgave 2/2010 Open Access

Psychological Research 2/2010

Category label and response location shifts in category learning

Tijdschrift:
Psychological Research > Uitgave 2/2010
Auteurs:
W. Todd Maddox, Brian D. Glass, Jeffrey B. O’Brien, J. Vincent Filoteo, F. Gregory Ashby

Abstract

The category shift literature suggests that rule-based classification, an important form of explicit learning, is mediated by two separate learned associations: a stimulus-to-label association that associates stimuli and category labels, and a label-to-response association that associates category labels and responses. Three experiments investigate whether information–integration classification, an important form of implicit learning, is also mediated by two separate learned associations. Participants were trained on a rule-based or an information–integration categorization task and then the association between stimulus and category label, or between category label and response location was altered. For rule-based categories, and in line with previous research, breaking the association between stimulus and category label caused more interference than breaking the association between category label and response location. However, no differences in recovery rate emerged. For information–integration categories, breaking the association between stimulus and category label caused more interference and led to greater recovery than breaking the association between category label and response location. These results provide evidence that information–integration category learning is mediated by separate stimulus-to-label and label-to-response associations. Implications for the neurobiological basis of these two learned associations are discussed.

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