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Alpha oscillatory evidence for shared underlying mechanisms of creativity and fluid intelligence above and beyond working memory-related activity

Author

Listed:
  • Eymann, Vera
  • Beck, Ann-Kathrin
  • Jaarsveld, Saskia
  • Lachmann, Thomas
  • Czernochowski, Daniela

Abstract

Although the relationship between creativity and fluid intelligence has been studied extensively with divergent and convergent thinking tasks, the underlying neural mechanisms of this relationship are still under debate. As both have been associated to working memory (WM), the question arises if there are shared underlying mechanisms for creativity and fluid intelligence other than WM-related activity. The present study examined how creativity and fluid intelligence, as measured by the creative reasoning task (CRT) and Raven's Advanced Progressive Matrices (APM), respectively, are characterized by modulations in the upper alpha band (10–12 Hz) and if they share common mechanisms beyond the requirement to maintain information in WM. Hence, we subtracted WM-related activity, measured within the same knowledge domain and by using highly comparable stimulus material, from both divergent and convergent thinking activity. Furthermore, to account for the temporal variability in the creative process, we investigated divergent and convergent thinking at early, intermediate and late stages. By introducing this methodological approach, we provide evidence for a higher fronto-parietal alpha synchronization in divergent relative to convergent thinking, especially towards the end of the thinking phase. Furthermore, we provide evidence that creativity and fluid intelligence share underlying mechanisms above and beyond task demands that rely on WM processes.

Suggested Citation

  • Eymann, Vera & Beck, Ann-Kathrin & Jaarsveld, Saskia & Lachmann, Thomas & Czernochowski, Daniela, 2022. "Alpha oscillatory evidence for shared underlying mechanisms of creativity and fluid intelligence above and beyond working memory-related activity," Intelligence, Elsevier, vol. 91(C).
  • Handle: RePEc:eee:intell:v:91:y:2022:i:c:s0160289622000113
    DOI: 10.1016/j.intell.2022.101630
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