The relationship between speed of information processing (SIP) and psychometric intelligence was investigated by giving 60 college students (22 males and 38 females) 2 choice reaction time (RT) tests (modified Hick paradigm) and Raven's Advanced Progressive Matrices. Results support an association between intelligence and SIP. (SLD)

Compared the Wechsler Adult Intelligence Scale (WAIS) and the WAIS-Revised (WAIS-R) in a sample of college students (N=70). A highly significant test order interaction was found. The WAIS-R will result in significantly higher ability estimates when administered following the WAIS than the WAIS will when following the WAIS-R. (JAC)

Compared the test scores of high and low anxious subjects when the Wechsler Adult Intelligence scale was administered by a trained examiner or mechanically. Findings indicated that performance was influenced by test administration procedures. There was a trend to score higher on the test given by an examiner. (Author/JAC)

Field dependence and spatial ability are examined as different labels for a common underlying dimension. Sixty college students completed two tests of field dependence and two tests of spatial ability. Results of an analysis of covariance found no evidence to view the two traits as distinct from each other. (Author/LMO)

Magnetic resonance imaging was used to demonstrate that larger brain size (corrected for body size) was associated with higher intelligence quotient (IQ) for 40 right-handed college students grouped by high and average IQ and sex. Results suggest the relevance of brain size to intelligence test performance. (SLD)

Intellectual abilities were measured for 217 German and 205 American college students using tests (in the subjects' native languages) in which equivalence was established by an item-response theory-based differential-item-functioning (DIF) analysis. Comparisons between groups were not the same before and after removal of DIF items. (SLD)

The general intelligence factor (g) was investigated using 170 university students across three batteries of ability measures: (1) a short-term memory battery; (2) the Multidimensional Aptitude Battery; and (3) a reaction time battery. Results support the notion of g and suggest short-term memory as an essential aspect of intelligence. (SLD)

Two studies (N=4,261 persons) illustrate an inverse relationship between ability level and correlations among IQ measures. Low IQ subjects showed higher correlations than did high IQ subjects. Intercorrelations of IQ subtests, intercorrelations of cognitive ability measures, and correlations of IQ with measures of cognitive ability displayed the…