Heritability of item responses on the Eysenck personality questionnaire |
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| Authors: | Michael C Neale J Philippe Rushton David W Fulker |
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| Institution: | 1. Centre for Academic Primary Care, Bristol Medical School, University of Bristol, UK;2. Centre for Population Health Research, School of Health and Social Development, Faculty of Health, Deakin University, Australia |
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| Abstract: | We report estimates of the heritabilities and common environment variances for the 90 items of the Eysenck Personality Questionnaire. Responses from 627 pairs of twins were analysed using the biometrical genetic analysis based on the threshold model described by Falconer. Many of the items revealed very substantial heritabilities. No less than 67/90 had heritabilities > 33%, 19 had > 50% and a few were even > 65%. Some of the useful implications of item heritabilities are discussed. |
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