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Direct linkAng, SiewChing; Rodgers, Joseph Lee; Wanstrom, Linda – Intelligence, 2010
Although the Flynn Effect has been studied widely across cultural, geographic, and intellectual domains, and many explanatory theories have been proposed, little past research attention has been paid to subgroup differences. Rodgers and Wanstrom (2007) identified an aggregate-level Flynn Effect (FE) at each age between 5 and 13 in the Children of…
Descriptors: Reading Comprehension, Intelligence, Mothers, Family Income
Bjerkedal, Tor; Kristensen, Petter; Skjeret, Geir A.; Brevik, John I. – Intelligence, 2007
The present paper reports the results of a within and between family analysis of the relation between birth order and intelligence. The material comprises more than a quarter of a million test scores for intellectual performance of Norwegian male conscripts recorded during 1984-2004. Conscripts, mostly 18-19 years of age, were born to women for…
Descriptors: Foreign Countries, Males, Siblings, Marital Status
