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Titolo:
LEFT-HANDEDNESS IN TWINS - GENES OR ENVIRONMENT
Autore:
ORLEBEKE JF; KNOL DL; KOOPMANS JR; BOOMSMA DI; BLEKER OP;
Indirizzi:
FREE UNIV AMSTERDAM,DEPT PHYSIOL PSYCHOL,DE BOELELAAN 1111 NL-1081 HVAMSTERDAM NETHERLANDS UNIV AMSTERDAM,ACAD MED CTR,DEPT OBSTET & GYNECOL NL-1105 AZ AMSTERDAM NETHERLANDS
Titolo Testata:
Cortex
fascicolo: 3, volume: 32, anno: 1996,
pagine: 479 - 490
SICI:
0010-9452(1996)32:3<479:LIT-GO>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIRTH-ORDER; WEIGHT; AGE; SEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
J.F. Orlebeke et al., "LEFT-HANDEDNESS IN TWINS - GENES OR ENVIRONMENT", Cortex, 32(3), 1996, pp. 479-490

Abstract

Twin family data can cast light on the longstanding problem about theinfluences of genes and environment on the etiology of left-handedness. Therefore, hand preference was assessed in 1700 adolescent twin pairs and their parents. Left-handedness (LH) appeared not significantly enhanced among twins compared to the general population. In addition the following observations were made: (1) Significant more LH in first born twins than in second born twins. (2) Significant higher left-handedness association in MZmm pairs compared to DZmm pairs and not or maybe marginally so in MZff versus DZff pairs. These results, combined with the observations that (a) left-handed fathers increase the probability of LH in sons but not in daughters; (b) LH in mothers increases LH prevalence in both sons and daughters to the same degree; and (c) very low birth weight, corrected for the effect of gestational age, increases LH prevalence in first born twins only, make an environmental explanation more likely. The possibility that exposure to prenatal male hormones - to which low birth weight and high birth stress children are more vulnerable might be a crucial condition for the etiology of LH,is discussed.

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Documento generato il 18/01/20 alle ore 01:44:17