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Direct linkPolderman, Tinca J. C.; Stins, John F.; Posthuma, Danielle; Gosso, M. Florencia; Verhulst, Frank C.; Boomsma, Dorret I. – Intelligence, 2006
This study examined the phenotypic and genotypic relationship between working memory speed (WMS) and working memory capacity (WMC) in 12-year-old twins and their siblings (N = 409). To asses WMS all children performed a reaction time task with three memory loads from which a basic mental speed measure and the derived slope were used. WMC was…
Descriptors: Short Term Memory, Children, Twins, Siblings
Download full textGlutting, Joseph J.; Watkins, Marley W.; Konold, Timothy R.; McDermott, Paul A. – Journal of Special Education, 2006
This study employed observed factor index scores as well as latent ability constructs from the "Wechsler Intelligence Scale for Children-Fourth Edition" (WISC-IV; Wechsler, 2003) in estimating reading and mathematics achievement on the "Wechsler Individual Achievement Test-Second Edition" (WIAT-II; Wechsler, 2002). Participants…
Descriptors: Measures (Individuals), Memory, Structural Equation Models, Multiple Regression Analysis
