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Direct linkZafer Ozen; Nielsen Pereira; Tugce Karatas; Hernán Castillo-Hermosilla; Yukiko Maeda – Gifted Child Quarterly, 2025
Cognitive Abilities Test (CogAT) is one of the most frequently used gifted identification tools. In this meta-analytic study, we investigated empirical evidence of the validity of CogAT, in relation to different types of instruments. After reviewing 1,480 studies, a total of 24 with 33 effect sizes were included in the meta-analysis. According to…
Descriptors: Test Validity, Cognitive Tests, Disability Identification, Scores
Peer reviewedSimonoff, Emily; Pickles, Andrew; Chadwick, Oliver; Gringras, Paul; Wood, Nicky; Higgins, Siobhan; Maney, Julie-Ann; Karia, Nisha; Iqbal, Huma; Moore, Anne – Journal of Child Psychology and Psychiatry, 2006
Background: Mild mental retardation is an enduring and impairing condition. Its prevalence has varied widely across different studies from 0.5 to over 8%, with higher rates in completely ascertained samples. The current study estimates the prevalence of low IQ in the mental retardation range (intellectual disability) in a population sample and…
Descriptors: Mild Mental Retardation, Disability Identification, Incidence, Children
