In a population-based sample of 112 nine-year old twin pairs, we investigated the association among total brain volume, gray matter and white matter volume, intelligence as assessed by the Raven IQ test, verbal comprehension, perceptual organization and perceptual speed as assessed by the Wechsler Intelligence Scale for Children-III. Phenotypic…

The mental representations and processes used in verbal comprehension were studied in 2 preliminary studies and 2 experiments involving a total of 158 college students solving synonym or sentence completion tasks. Response choices and latencies could be predicted with explicit information-processing models. Implications for theories of…

It is shown how typical analyses of strategic behavior focus on the "problem of remembering" based on the experimenter's conceptualization of optimum task performance. A new definition of a strategy is suggested in which strategies are seen as attempts to solve the "problem of remembering" as understood by the person. (Author/LMO)