Publication

An integrated perspective on the relation between response speed and intelligence

van Ravenzwaaij, D., Brown, S. & Wagenmakers, E-J., Jun-2011, In : Cognition. 119, 3, p. 381-393 13 p.

Research output: Contribution to journalArticleAcademicpeer-review

Copy link to clipboard

Documents

  • An integrated perspective on the relation between response speed and intelligence

    Final publisher's version, 611 KB, PDF document

DOI

Research in the field of mental chronometry and individual differences has revealed several robust regularities (Jensen, 2006). These include right-skewed response time (RT) distributions, the worst performance rule, correlations with general intelligence (g) that are more pronounced for RT standard deviations (RTSD) than they are for RT means (RTm), an almost perfect linear relation between individual differences in RTSD and RTm, linear Brinley plots, and stronger correlations between g and inspection time (IT) than between g and RTm. Here we show how all these regularities are manifestations of a single underlying relationship, when viewed through the lens of Ratcliff’s diffusion model (Ratcliff, 1978, Ratcliff et al., 2008). The single underlying relationship is between individual differences in general intelligence and individual differences in “drift rate”, which is just the speed of information processing in Ratcliff’s model. We also test and confirm a strong prediction of the diffusion model, namely that the worst performance rule generalizes to phenomena outside of the field of intelligence. Our approach provides an integrative perspective on intelligence findings.
Original languageEnglish
Pages (from-to)381-393
Number of pages13
JournalCognition
Volume119
Issue number3
Publication statusPublished - Jun-2011
Externally publishedYes

    Keywords

  • DIFFUSION-MODEL ANALYSIS, PERCEPTUAL DECISION-MAKING, REACTION-TIME VARIABILITY, WORST PERFORMANCE RULE, INDIVIDUAL-DIFFERENCES, PROCESSING-SPEED, BRIGHTNESS-DISCRIMINATION, 2-CHOICE DECISIONS, INSPECTION TIME, BASAL GANGLIA

View graph of relations

ID: 27953088