PMID: 9438955Jan 24, 1998Paper

Learning correlations in categorization tasks using large, ill-defined categories

Journal of Experimental Psychology. Learning, Memory, and Cognition
R D Thomas

Abstract

The experiments revealed whether individual participants are sensitive to exemplar information in the form of within-category correlations between stimulus dimensions after training on large overlapping categories. Participants were trained in 1 of 2 categorization conditions. The sign of the correlation between dimensions differed across conditions, but the categorization rules that best separated the categories were identical. An unannounced attribute-prediction task followed categorization training. Several participants produced predictions consistent with the correct correlation between the dimensions. For other participants, the predictions reflected the correlation only within the region they had associated with the given category, even though the categories overlapped, suggesting that the decision boundary was explicitly represented in memory. Finally, for other participants, no correlational information appeared to be accessible for the prediction task.

Citations

Dec 14, 2002·Cognitive Psychology·Mark K Johansen, Thomas J Palmeri
May 15, 2013·PloS One·Steven Verheyen, Gert Storms
Jul 23, 2002·Perception & Psychophysics·Leola A Alfonso-ReeseDavid H Brainard
Jun 14, 2002·Memory & Cognition·Seth Chin-Parker, Brian H Ross
May 25, 2002·Psychonomic Bulletin & Review·Michael A Erickson, John K Kruschke
Jan 26, 2011·Memory & Cognition·Christopher PapadopoulosBen R Newell
Aug 9, 2006·Psychonomic Bulletin & Review·L Elizabeth CrawfordLarry V Hedges
Mar 31, 2007·Behavior Research Methods·Leola A Alfonso-Reese
Aug 20, 2003·Journal of Experimental Psychology. Learning, Memory, and Cognition·Lee-Xieng Yang, Stephan Lewandowsky
Feb 26, 2004·Journal of Experimental Psychology. General·Jeffrey N Rouder, Roger Ratcliff
Jul 10, 2003·Psychological Bulletin·Arthur B Markman, Brian H Ross

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