Twin resemblances in cognitive abilities in an Egyptian sample

Thirty-six pairs of monozygotic (MZ) twins, 24 pairs of same-sexed dizygotic (DZ) twins, and 33 pairs of opposite-sexed DZ twins 12 to 19 years of age were tested in Minia, Egypt, on a battery of cognitive abilities tests. For most of the tests and composite scales, DZ resemblances were higher than...

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Veröffentlicht in:	Behavior genetics 1990, Vol.20 (1), p.33-43
Hauptverfasser:	ABDEL-RAHIM, A. R, NAGOSHI, C. T, VANDENBERG, S. G
Format:	Artikel
Sprache:	eng
Schlagworte:	Adolescent Aptitude assortative mating Biological and medical sciences Child Classical genetics, quantitative genetics, hybrids Cognition cognitive ability Cross-Cultural Comparison Egypt Female Fundamental and applied biological sciences. Psychology Genetics of eukaryotes. Biological and molecular evolution Genetics, Population Human Humans Male Twins - genetics Twins, Dizygotic - genetics Twins, Monozygotic - genetics
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Zusammenfassung:	Thirty-six pairs of monozygotic (MZ) twins, 24 pairs of same-sexed dizygotic (DZ) twins, and 33 pairs of opposite-sexed DZ twins 12 to 19 years of age were tested in Minia, Egypt, on a battery of cognitive abilities tests. For most of the tests and composite scales, DZ resemblances were higher than typically found in Western samples and not significantly different from MZ resemblances. MZ resemblances were generally lower than typically found in Western samples. These results were discussed in terms of the influence of cross-cultural differences in degree of social stratification and assortative mating.
ISSN:	0001-8244 1573-3297
DOI:	10.1007/BF01070738