Recent studies are examined for methodological adequacy in establishing dimensions of individual differences in information-processing abilities, and the theoretical problems involved in inferring psychological processes from individual difference dimensions. Methodological inadequacies include use of small samples, questionable procedures in…

This study was conducted to determine how the pattern of learning on an abstract concept, plate tectonics, differed between groups of different cognitive levels, sex, and intelligence quotient (IQ). The intensive time-series design was used to examine the achievement of eighth grade and ninth grade earth science students. The unique characteristic…

This book starts with a review of the evolution of the notion of intelligence in its first chapter. In 1969, an article by psychologist Arthur R. Jensen suggested that there may be innate differences in intellectual potential between blacks and whites, and, if so, these differences should be taken into account in educational planning. The…