| Effects of placentation on selected Type A behaviors in adult males in the National Heart, Lung, and Blood Institute (NHLBI) twin study. | |
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MedLine Citation:
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PMID: 2018465 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A dermatoglyphic index derived from monozygotic (MZ) twins of known placental type was used to estimate placentation retrospectively in a sample of adult male MZ twins. Examination of behavioral test scores with respect to placentation showed that the within-pair difference of most measures of type A behavior was smaller in presumed monochorionic than presumed dichorionic pairs. Measures of cognitive function and hostility were not related to placental type. Intraclass correlations in the monochorionic subgroup of MZ twins were greater than the correlations reported for the full sample of MZ twins. The trends were strongest for the Adjective Check List scales taken at two different exams 5 years apart and, to a lesser extent, for the Framingham type A scale. Our results are most consistent with greater intrauterine environmental covariance in monochorionic MZ twins as an explanation for inflation of the MZ twin correlation relative to dizygotic (DZ) correlation reported for some type A measures. |
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Authors:
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T Reed; D Carmelli; R H Rosenman |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Behavior genetics Volume: 21 ISSN: 0001-8244 ISO Abbreviation: Behav. Genet. Publication Date: 1991 Jan |
Date Detail:
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Created Date: 1991-05-23 Completed Date: 1991-05-23 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0251711 Medline TA: Behav Genet Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 9-19 Citation Subset: IM |
Affiliation:
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Department of Medical Genetics, Indiana University School of Medicine, Indianapolis 46202. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Female Humans Longitudinal Studies Male Placentation / genetics* Pregnancy Social Environment Twins, Dizygotic / genetics* Twins, Monozygotic / genetics*, psychology Type A Personality* |
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