Journals of Gerontology Series B: Psychological Sciences and Social Sciences
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Journals of Gerontology Series B: Psychological Sciences and Social Sciences, Vol 50, Issue 4 P212-P218, Copyright © 1995 by The Gerontological Society of America


ARTICLES

Age differences in the formation of equivalence classes

KM Wilson and MA Milan
Psychology Department, Eastern Illinois University, Charleston 61920, USA.

In order to investigate the relationship between stimulus equivalence class formation and age differences, two groups of elderly (ages 62-81) and young (ages 19-22) adult men and women mastered a series of simple and conditional discriminations. Subsequently, they were administered a test for the emergence of equivalence relations. There was a significant age difference in the emergence of equivalence relations, with the elderly subjects less likely to demonstrate equivalence relations. Measures of response latencies evidenced a general slowing of behavior for the elderly group across tasks. There were no gender or Age by Gender interactions. Possible explanations for the age differences are discussed.




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