A TWIN STUDY OF GENERAL INTELLIGENCE AND SPECIFIC COGNITIVE ABILITIES (HERITABILITY).
Item
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Title
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A TWIN STUDY OF GENERAL INTELLIGENCE AND SPECIFIC COGNITIVE ABILITIES (HERITABILITY).
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Identifier
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AAI8713806
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identifier
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8713806
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Creator
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VAN WESS, LAURIE E.
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Contributor
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David R. Owen
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Date
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1987
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Language
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English
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Publisher
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City University of New York.
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Subject
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Education, Educational Psychology
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Abstract
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The performances of monozygotic and same-sex dizygotic twins were examined on an abbreviated form of the Wechsler Adult Intelligence Scale--Revised (WAIS-R) as well as on sequential pattern learning and frequency of occurrence tasks. The heritability estimate (H) for the WAIS-R of .61 showed excellent agreement with the previous literature on general intelligence. The heritability estimates for the sequential pattern learning task (H = .79) and for the frequency of occurrence task (H = .29) provided evidence of differential heritability for specific cognitive skills. In addition to studying genetic influence, this research examined the effects of two independent variables on sequential pattern learning performance. The type of operation required to complete the pattern, the number of items which change within a string, and their interaction were found significantly to influence performance. Finally, the study revealed a moderate correlation between general intelligence and sequential pattern learning performance and, as hypothesized, virtually no relationship between general intelligence and performance on the frequency of occurrence task.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Psychology
