Heritability estimates of intelligence in twins: Effect of chorion type

被引：49

作者：

Jacobs, N

Van Gestel, S

Derom, C

Thiery, E

Vernon, P

Derom, R

Vlietinck, R

机构：

[1] Katholieke Univ Leuven, Ctr Human Genet, Louvain, Belgium

[2] Univ Ghent, Dept Psychiat & Neuropsychol, B-9000 Ghent, Belgium

[3] Assoc Sci Res Multiple Births, Ghent, Belgium

[4] Univ Western Ontario, Dept Psychol, London, ON N6A 5C2, Canada

来源：

BEHAVIOR GENETICS | 2001年 / 31卷 / 02期

关键词：

twins; chorion type; heritability; intelligence; prenatal environment;

D O I：

10.1023/A:1010257512183

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

This study investigates the basic assumption of homogeneity of monozygotic (MZ) twins: are there differences according to the timing of the zygotic splitting, early in dichorionic (DC) and later in monochorionic (MC) pairs? We assessed the IQ of 451 same-sexed twin pairs of known zygosity and chorion type with the Wechsler Intelligence Scale for Children-Revised (WISCR). The variances of within-pair differences were compared for monochorionic (MC), dichorionic monozygotic (DC-MZ) and dizygotic same-sexed (DZ) twins and structural equation modeling was applied. High heritability estimates were found for almost all subscales and IQ-scores. A significant effect of chorion type was found: the MC twins resembled each other more than the DC-MZ twins on the subscales Arithmetic and Vocabulary. The effect accounts for respectively 14% and 10% of the total variance.

引用

页码：209 / 217

页数：9

共 45 条

[1] FACTOR-ANALYSIS AND AIC [J].

AKAIKE, H .

PSYCHOMETRIKA, 1987, 52 (03) :317-332

[2]

[Anonymous], 1967, PLACENTA TWIN PREGNA

[3]

BAKER LA, 1993, TWINS TOOL BEHAV GEN, P85

[4]

Benirschke K., 1995, Pathology of the Human Placenta. Pathology of the Human Placenta

[5]

Boomsma DI, 1993, TWINS TOOL BEHAV GEN, P67

[6]

BRAND CR, 1993, TWINS TOOL BEHAV GEN, P17

[7]

BROWN B, 1977, M SOC RES CHILD DEV

[8] THE VALUE OF TWIN SURVEYS IN THE STUDY OF MALFORMATIONS [J].

CAMERON, AH ;

EDWARDS, JH ;

DEROM, R ;

THIERY, M ;

BOELAERT, R .

EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY, 1983, 14 (05) :347-356

[9] X chromosome-inactivation patterns confirm the late timing of monoamniotic-MZ twinning [J].

Chitnis, S ;

Derom, C ;

Vlietinck, R ;

Derom, R ;

Monteiro, J ;

Gregersen, PK .

AMERICAN JOURNAL OF HUMAN GENETICS, 1999, 65 (02) :570-571

[10]

CHRISTIAN JC, 1974, AM J HUM GENET, V26, P154

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