TY - GEN
T1 - Fitting a model to behavior tells us what changes cognitively when under stress and with caffeine
AU - Ritter, Frank E.
AU - Kase, Sue E.
AU - Klein, Laura Cousino
AU - Bennett, Jeanette
AU - Schoelles, Michael
PY - 2009
Y1 - 2009
N2 - 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 human performance data using a parallel genetic algorithm. How the model's parameters change to fit the data suggest how cognition changes due to caffeine and appraisal. Overall, the cognitive modeling and optimization results suggest that the speed of vocalization varies the most along with changes to declarative memory. This approach provides a way to compute how cognitive mechanisms change due to moderators.
AB - 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 human performance data using a parallel genetic algorithm. How the model's parameters change to fit the data suggest how cognition changes due to caffeine and appraisal. Overall, the cognitive modeling and optimization results suggest that the speed of vocalization varies the most along with changes to declarative memory. This approach provides a way to compute how cognitive mechanisms change due to moderators.
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M3 - Conference contribution
AN - SCOPUS:77954223992
SN - 9781577354352
T3 - AAAI Fall Symposium - Technical Report
SP - 109
EP - 115
BT - Biologically Inspired Cognitive Architectures-II - Papers from the AAAI Fall Symposium, Technical Report
T2 - 2009 AAAI FAll Symposium
Y2 - 5 November 2009 through 7 November 2009
ER -