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Direct linkResing, Wilma C. M.; Tunteler, Erika – International Journal of Testing, 2007
In this article, time effects on intelligence test scores have been investigated. In particular, we examined whether the "Flynn effect" is manifest in children from the middle and higher IQ distribution range, measured with a child intelligence test based on information processing principles--the Leiden Diagnostic Test. The test was administered…
Descriptors: Intelligence, Intelligence Quotient, Children, Information Processing
Rojahn, Johannes; Naglieri, Jack A. – Intelligence, 2006
Lynn [Lynn, R., 2002. Sex differences on the progressive matrices among 15-16 year olds: some data from South Africa. "Personality and Individual Differences 33," 669-673.] proposed that biologically based developmental sex differences produce different IQ trajectories across childhood and adolescence. To test this theory we analyzed the…
Descriptors: Gender Differences, Nonverbal Ability, Intelligence Quotient, Children
