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On the interplay of temporal resolution power and spatial suppression in their prediction of psychometric intelligence

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  • Lisa M Makowski
  • Thomas H Rammsayer
  • Duje Tadin
  • Philipp Thomas
  • Stefan J Troche

Abstract

As a measure of the brain’s temporal fine-tuning capacity, temporal resolution power (TRP) explained repeatedly a substantial amount of variance in psychometric intelligence. Recently, spatial suppression, referred to as the increasing difficulty in quickly perceiving motion direction as the size of the moving stimulus increases, has attracted particular attention, when it was found to be positively related to psychometric intelligence. Due to the conceptual similarities of TRP and spatial suppression, the present study investigated their mutual interplay in the relation to psychometric intelligence in 273 young adults to better understand the reasons for these relationships. As in previous studies, psychometric intelligence was positively related to a latent variable representing TRP but, in contrast to previous reports, negatively to latent and manifest measures of spatial suppression. In a combined structural equation model, TRP still explained a substantial amount of variance in psychometric intelligence while the negative relation between spatial suppression and intelligence was completely explained by TRP. Thus, our findings confirmed TRP to be a robust predictor of psychometric intelligence but challenged the assumption of spatial suppression as a representation of general information processing efficiency as reflected in psychometric intelligence. Possible reasons for the contradictory findings on the relation between spatial suppression and psychometric intelligence are discussed.

Suggested Citation

  • Lisa M Makowski & Thomas H Rammsayer & Duje Tadin & Philipp Thomas & Stefan J Troche, 2022. "On the interplay of temporal resolution power and spatial suppression in their prediction of psychometric intelligence," PLOS ONE, Public Library of Science, vol. 17(9), pages 1-19, September.
    • Handle: RePEc:plo:pone00:0274809
    DOI: 10.1371/journal.pone.0274809
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