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4 - Basic Information Processing and the Psychophysiology of Intelligence

Published online by Cambridge University Press:  23 November 2009

By
Aljoscha C. Neubauer  and
Andreas Fink
Edited by
Robert J. Sternberg  and
Jean E. Pretz
Robert J. Sternberg
Affiliation:
Yale University, Connecticut
Jean E. Pretz
Affiliation:
Yale University, Connecticut
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Summary

BASIC INFORMATION PROCESSING AND INTELLIGENCE

Research on individual differences in human cognitive abilities or intelligence has a long history in scientific psychology. After decades of psychometric research into the structure of human cognitive abilities, the last 20 to 30 years have been characterized also by attempts to analyze cognitive components and correlates of psychometric intelligence. In this realm an important approach has been the attempt to relate the individual speed of information processing to psychometric intelligence (the so-called mental speed approach). This approach traces back to the idea that human cognitive or intellectual functioning might be decomposed in elementary cognitive processes, which are assumed to constitute an important basis of intellectual functioning. In the last two decades important progress has been made in this field of research: In using so-called elementary cognitive tasks (ECTs), which put only minimal requirements on the participants and are, thus, less likely prone to differential strategy usage, dozens of studies have provided converging evidence that shorter reaction times in these tasks are associated with higher psychometric intelligence, indicating a higher speed of information processing in brighter individuals.

The ECTs that have been used most extensively in this field of research are the Hick and the inspection time (IT) paradigm (see Fig. 1a). In the IT paradigm (cf. Vickers, Nettelbeck, & Wilson, 1972) participants are tachistoscopically (i.e., for very short exposure durations) shown two vertical lines of different length. Immediately after their exposure, the lines are masked by two thicker vertical lines of equal length.

Type
Chapter
Information
Cognition and Intelligence
Identifying the Mechanisms of the Mind
 , pp. 68 - 87
Publisher: Cambridge University Press
Print publication year: 2004

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