Speed of Information Processing and Individual Differences in Intelligence.
Interim rept. 1984-1985,
NAVY PERSONNEL RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA
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A battery of tachistoscopic, auditory, reaction time, and microcomputer generated measures of information processing speed was administered to 96 college students between 18 and 22 years of age. In addition, each subject was given a battery of tests designed to evaluate right and left cerebral hemisphere functioning. Criterion measures included a verbal Vocabulary and nonverbal Block Design measure of intelligence. Results revealed a general processing speed factor in addition to task specific sources of variability. Moreover, the processing speed tasks loaded on the same second order factor as did traditional measures of I.Q. The findings support the theoretical view that processing speed may be a partial source of individual differences in intelligence. An important objective for future work in this area is to separate and evaluate the common and specific sources of variability on information processing tasks. Keywords Cognitive speed Inspection time Reaction time and Scholastic aptitude intelligence. Author