Individual differences in semantic processing: Insights from the Calgary semantic decision project

Journal of Experimental Psychology. Learning, Memory, and Cognition
Penny M Pexman, Melvin J Yap

Abstract

Most previous studies of semantic processing have examined group-level data. We investigated the possibility that there might be individual differences in semantic decision performance even among the standard undergraduate population and that such differences might provide insights into semantic processing. We analyzed the Calgary Semantic Decision Project dataset, which includes concrete/abstract semantic decision responses to thousands of words and also a vocabulary measure for each of 312 participants. Results of our analyses showed that semantic decision responses had good reliability, and that the speed of those responses was related to individual differences as assessed by vocabulary scores and also by diffusion model parameters. That is, semantic decisions were faster for participants with higher vocabulary scores and for participants with steeper drift rates. Further, in their semantic decision responses high vocabulary participants showed more sensitivity to some lexical/semantic predictors and less sensitivity to others. For responses to both concrete and abstract words, high vocabulary participants were more sensitive to word concreteness and less sensitive to word frequency and age of acquisition. For concrete words...Continue Reading

Citations

Feb 6, 2020·The Quarterly Journal of Experimental Psychology : QJEP·Rosemarie Yh LimChi-Shing Tse
Jul 4, 2018·Behavior Research Methods·Alison HeardPenny M Pexman
Apr 16, 2020·Behavior Research Methods·Sally AndrewsIndako E Clarke
Jun 25, 2021·Frontiers in Psychology·Lorraine D RegginPenny M Pexman
Jun 25, 2021·The Quarterly Journal of Experimental Psychology : QJEP·Simone SulpizioMichele Scaltritti

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