Clark, Lawlor-Savage, and Goghari (this issue) point out that evidence of IQ rises had been documented decades before it was named the Flynn effect. These previous studies, however, were conducted sporadically and in isolated samples. Flynn (1984, 1987) examined them in a large-scale manner and was able to show their systematic and global nature.…

The Flynn effect, a secular rise in IQ seen throughout the world, was examined on the WISC-R and WISC-III subtests in a longitudinal sample of more than 2,500 school children who were tested between 1974 and 2002. Multivariate analysis of variance and multiple regression analyses revealed that all the subtests experienced significant decreases in…

While the magnitude of the Flynn effect is well established (approximately 3 points a decade on the Wechsler scales), the causes behind it are still unknown and hotly debated. Kaufman argues that, because of the administrative and scoring changes that occurred with the introduction of the Wechsler Intelligence Scale for Children-Revised, Flynn's…

Because of the Flynn effect, IQ scores rise as a test norm ages but drop on the introduction of a newly revised test norm. The purpose of the current study was to determine the impact of the Flynn effect on learning disability (LD) diagnoses, the most prevalent special education diagnosis in the United States. Using a longitudinal sample of 875…