Search Results

Author: Irwing, Paul
Resulting in 1 citation.
1. Deary, Ian J.
Irwing, Paul
Der, Geoff
Bates, Timothy C.
Brother--Sister Differences in the g Factor in Intelligence: Analysis of Full, Opposite-Sex Siblings from the NLSY1979
Intelligence 35,5 (September-October 2007): 451-456.
Also: http://www.sciencedirect.com/science/article/pii/S0160289606001115
Cohort(s): NLSY79
Publisher: Elsevier
Keyword(s): Armed Forces Qualifications Test (AFQT); Armed Services Vocational Aptitude Battery (ASVAB); Cognitive Ability; g Factor; Gender Differences; I.Q.; Intelligence; Siblings; Sisters

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. [Copyright 2007 Elsevier]

Copyright of Intelligence is the property of Elsevier Science Publishing Company, Inc. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.

(Copyright applies to all Abstracts)
Bibliography Citation
Deary, Ian J., Paul Irwing, Geoff Der and Timothy C. Bates. "Brother--Sister Differences in the g Factor in Intelligence: Analysis of Full, Opposite-Sex Siblings from the NLSY1979." Intelligence 35,5 (September-October 2007): 451-456.