This study found that 10 adolescents with mental retardation processed stimuli varying with respect to symmetry in comparable manner to peers matched for mental age and chronological age. Results argue for the robustness of the symmetry effect across groups differing in intelligence and physically dissimilar stimulus types (checkerboard versus…

The relation between reflexive and voluntary orienting of visual attention was investigated with 4 experiments: a simple detection task, a localization task, a saccade toward the target task, and a target identification task in which discrimination difficulty was manipulated. Endogenous and exogenous orienting cues were presented in each trial and…

Author focused on differences between whites and negroes in the United States and more generally on racial variation in man. (Author/RK)

There is considerable controversy as to why middle-class youngsters outperform lower-class youngsters on most measures of academic ability. This article examines the differences between two prominent views as to why this disparity exists. (Author/HMV)

A study was conducted to determine the relative effectiveness of several different visual, visual-verbal, and verbal treatments on the recall of factual information. The primary measure of individual differences of subjects involved in the study was that of intelligence quotient (I.Q.). The study attempted to determine whether or not treatments…

This study investigated whether children oversized at birth, like those undersized at birth, have an increased chance of mental subnormality. Subjects were 4-year-olds born of urban disadvantaged white mothers whose average education was 10.8 years. Stanford-Binet intelligence scores of the subjects were compared to their birth weights. Between…

Relative preference for interacting with people versus objects was observed in 38 children during nursery school free play. Object oriented students were found to perform better on organization and classification of physical objects. Person orientation was not found to be related to performance on tests assessing social knowledge. (GO)

Concludes that if abilities are examined in terms of the experiences children undergo in any culture, it is apparent that there are few dumb children if they are classified from the perspective of the community of adaptation. (Author/AM)

The Ravens Standard Progressive Matrices Test was administered to 48 subjects who then performed a card-sorting task under single- and competing-task conditions. Hick's Law and the Roth-Jensen procedure were used in task development. Complexity should have a more central role in speed of processing models of intelligence than ability to divide…