To assess changes in processing speed in the second and third years of life, 2 sequential visual events were shown to 22-, 27-, and 32-month-old children, 12 at each age. Response clusters indicated that speed of processing increased with age and that a proactive inhibition declined with age. (SLD)

Subjects judged whether aerial views would be seen by an observer oriented in various ways. For practiced subjects, time to answer was an approximately linear function of number of abstract spatial dimensions on which aerial view and observer's orientation were consistent. Ability correlated with linearity of response-time. (Author/RD)

To explore the relationship between spatial ability and both image quality and image process efficiency, 79 subjects completed spatial tests, imagery questionnaires, and laboratory tasks. Laboratory measures of process efficiency and image quality were strongly related to spatial test performance and weakly related to one another. (Author/BW)

Individual differences in visual recognition memory and intelligence were correlated using 52 five-year-olds whose IQs ranged from 40-136. The correlation between memory performance and IQ was .70 for whole sample, and .61 when children with IQs below 75 were omitted. Immediate recognition memory is highly associated with intelligence. (Author/RD)

Normal and retarded adolescents recalled consonants after 0, 9, and 27 seconds of tonal detection and performed the detection task without recall. Subjects were classified as rehearsers or nonrehearsers, depending upon variations in tonal detection accuracy or response times across conditions. Normal and retarded nonrehearsers showed equal…

Substitution tests have a long history in psychology because of their simplicity of administration and their sensitivity to individual differences related to complex cognitive performance. Despite their widespread use there is no agreement on what the substitution test measures. The present study approached this question by applying a method of…

Three forms of a symbol-digit substitution task were administered to 62 female and 96 male college students. Results support the theory that the superior performance of women over men on the Digit-Symbol Substituion subtest of the Wechsler scales is due to their greater ability to encode symbols verbally. (Author/JAC)

Theoretical implications of individual differences among infants in responsiveness to visual novelty being predictive of later intelligence differences are discussed. Issues discussed include: continuity of intelligence over development, relation of aspects of information processing to intelligence, role of hereditary and environmental influences…

Children, below- and above-average intelligence, were administered tasks involving matching information between auditory/visual modalities and temporal/spatial presentations. The below-average group made more errors and matching problems were not particular to one modality. Factor analyses did suggest that matching processes varied with level of…

A correlation exists between verbal ability test scores and name identity minus physical identity reaction times in a letter matching task. The present results support Carroll's (1981) suggestion that the reaction time difference is related more to speed than power component of standardized tests and is not optimum for prediction. (Author/RD)