Article
A longitudinal twin study on IQ, executive functioning, and attention problems during childhood and early adolescence.
Acta neurologica Belgica - 1 Dec 2006
Polderman Tinca J C, Gosso M Florencia, Posthuma Danielle, Van Beijsterveldt Toos C E M, Heutink Peter, Verhulst Frank C, Boomsma Dorret I
Abstract excerpt
Variation in human behavior may be caused by differences in genotype and by non-genetic differences ("environment") between individuals. The relative contributions of genotype (G) and environment (E) to phenotypic variation can be assessed with the classical twin design. We illustrate this approach with longitudinal data collected in 5 and 12-year-old Dutch twins. At age 5 data on cognitive abilities as assessed...
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