Fitting a model to behavior reveals what changes cognitively when under stress and with caffeine

Sue E. Kase, Frank Edward Ritter, Jeanette M. Bennett, Laura Klein, Michael Schoelles

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A human subject experiment was conducted to investigate caffeine's effect on appraisal and performance of a mental serial subtraction task. Serial subtraction performance data was collected from three treatment groups: placebo, 200, and 400 mg caffeine. The data were analyzed by caffeine treatment group and how subjects appraised the task (as challenging or threatening). A cognitive model of the serial subtraction task was developed. The model was fit to the individual human performance data using a parallel genetic algorithm (PGA). The best fitting parameters found by the PGA suggest how cognition changes due to caffeine and appraisal. Overall, the cognitive modeling and optimization results suggest that due to caffeine and task appraisal the speed of vocalization varies the most along with changes to declarative memory. This approach using a PGA provides a new method for computing how cognitive mechanisms change due to moderators or individual differences.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalBiologically Inspired Cognitive Architectures
Volume22
DOIs
StatePublished - Oct 1 2017

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Caffeine
Parallel algorithms
Genetic algorithms
Moderators
Individuality
Cognition
Placebos
Data storage equipment
Therapeutics
Experiments

All Science Journal Classification (ASJC) codes

  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience
  • Artificial Intelligence

Cite this

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Fitting a model to behavior reveals what changes cognitively when under stress and with caffeine. / Kase, Sue E.; Ritter, Frank Edward; Bennett, Jeanette M.; Klein, Laura; Schoelles, Michael.

In: Biologically Inspired Cognitive Architectures, Vol. 22, 01.10.2017, p. 1-9.

Research output: Contribution to journalArticle

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