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Titre du document / Document title

Brother-sister differences in the g factor in intelligence : Analysis of full, opposite-sex siblings from the NLSY1979

Auteur(s) / Author(s)

DEARY Ian J. (1) ; IRWING Paul (2) ; DER Geoff (3) ; BATES Timothy C. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Psychology, University of Edinburgh, 7 George Square, Edinburgh EH8 9JZ, ROYAUME-UNI
(2) Manchester Business School. University of Manchester, ROYAUME-UNI
(3) MRC Social and Public Health Sciences Unit, University of Glasgow, ROYAUME-UNI

Résumé / Abstract

There is scientific and popular dispute about whether there are sex differences in cognitive abilities and whether they are relevant to the proportions of men and women who attain high-level achievements, such as Nobel Prizes. A recent meta-analysis (Lynn, R., and Irwing, P. (2004). Sex differences on the progressive matrices: a meta-analysis. Intelligence, 32, 481-498.), which suggested that males have higher mean scores on the general factor in intelligence (g), proved especially contentious. Here we use a novel design, comparing 1292 pairs of opposite-sex siblings who participated in the US National Longitudinal Survey of Youth 1979 (NLSy1979). The mental test applied was the Armed Services Vocational Aptitude Battery (ASVAB), from which the briefer Armed Forces Qualification Test (AFQT) scores can also be derived. Males have only a marginal advantage in mean levels of g (less than 7% of a standard deviation) from the ASVAB and AFQT, but substantially greater variance. Among the top 2% AFQT scores, there were almost twice as many males as females. These differences could provide a partial basis for sex differences in intellectual eminence.

Revue / Journal Title

Intelligence    ISSN  0160-2896   CODEN NTLLDT 

Source / Source

2007, vol. 35, no5, pp. 451-456 [6 page(s) (article)] (3/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Amsterdam, PAYS-BAS  (1977) (Revue)

Mots-clés anglais / English Keywords

Cognition

;

Human

;

Intellectual ability

;

Sibling

;

Sex

;

Intelligence g factor

;

Mots-clés français / French Keywords

Cognition

;

Homme

;

Aptitude intellectuelle

;

Fratrie

;

Sexe

;

Facteur g intelligence

;

Mots-clés espagnols / Spanish Keywords

Cognición

;

Hombre

;

Aptitud intelectual

;

Hermandad

;

Sexo

;

Factor g inteligencia

;

Mots-clés d'auteur / Author Keywords

intelligence

;

g

;

Sex

;

Gender

;

Localisation / Location

INIST-CNRS, Cote INIST : 18063, 35400016155179.0040

Nº notice refdoc (ud4) : 18999054



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