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Direct linkWai, Jonathan; Allen, Jeff – Gifted Child Quarterly, 2019
We examined 482,418 students who took the ACT in the seventh grade and again in high school, taking an exploratory analytic approach to examine academic growth trends from 1996 to 2017. Predictors included sociodemographics, interests, high school (HS) characteristics, HS coursework and GPA, and extracurriculars, which explained 25% of the…
Descriptors: Talent Development, Predictor Variables, Achievement Gains, Secondary School Students
Peer reviewedWai, Jonathan; Putallaz, Martha – Intelligence, 2011
The Flynn effect is the rise in IQ scores across the last eighty or more years documented in the general distribution of both industrialized and developing nations primarily on tests that require problem solving and non-verbal reasoning. However, whether the effect extends to the right tail (i.e., the top 5% of ability) remains unknown. The…
Descriptors: Intelligence Quotient, Intelligence Tests, Change, Test Norms
