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Psychosomatic Medicine, Vol 38, Issue 2 140-144, Copyright © 1976 by American Psychosomatic Society
ORIGINAL ARTICLES |
KA Matthews and DS Krantz
A twin study was conducted to determine the relative contribution of genetic and environmental factors to the development of Pattern A behavior. Thirty-five sets of college-aged MZ twins and 21 sets of DZ twins completed the lenkins Activity Survey for Health Prediction. This self-administering questionnaire yields scales measuring Pattern A behavior and its related traits of Speed and Impatience, Job Involvement, and Hard-driving Competitiveness. Results showed a modest genetic component for the Hard-driving Competitive aspect of Pattern A. Data were also presented regarding resemblances between the twins and their parents on Pattern A.
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