| Literature DB >> 8347115 |
P Schulman1, D Keith, M E Seligman.
Abstract
Is optimism heritable? We gave the Attributional Style Questionnaire (ASQ), a measure of optimism, to 115 monozygotic twin pairs (MZ) and 27 dizygotic twin pairs (DZ). The intraclass correlations of the ASQ scores were 0.48 for MZ twins (P < 0.0001) and 0 for DZ twins. Though the sample size of DZ twins is small, these results suggest that there may be a substantial genetic effect on optimism. We speculate, however, that the mechanism for the transmission of this, and other complex personality traits, may be highly indirect.Entities:
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Year: 1993 PMID： 8347115 DOI： 10.1016/0005-7967(93)90108-7
Source DB: PubMed Journal: Behav Res Ther ISSN： 0005-7967