Personality and information processing speed: Independent influences on intelligent performance

Timothy C. Bates*, Andrew Rock

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    33 Citations (Scopus)


    Raven's matrices and inspection time (IT) were recorded from 56 subjects under five arousal levels. Raven's and IT correlated strongly ( r =-.7) as predicted by processing-speed theories of g . In line with Eysenck's [Eysenck, H. J. (1967). The biological basis of personality. Springfield, IL: Thomas] arousal theory of extraversion, there was a significant inverted U relationship between Raven's scores and arousal. No support was found for predictions that the IT-Raven's correlation was affected by personality. Likewise, the prediction of Gardner [Gardner, H. (1983). Frames of mind: The theory of multiple intelligences. New York: Basic Books] that ability measures correlate only because they share linguistic mediation was not supported. Instead, the data are compatible with a model in which processing speed and personality jointly influence performance on intelligence tests via predictable additive effects of processing speed and quadratic interaction effects of arousal and personality.

    Original languageEnglish
    Pages (from-to)33-46
    Number of pages14
    Issue number1
    Publication statusPublished - Jan 2004


    • Arousal
    • Inspection time
    • IQ
    • Personality
    • Processing speed


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