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Decision making under time pressure: an independent test of sequential sampling models

By Itiel E. Dror, Jerome R. Busemeyer and Beth Basola

Abstract

Choice probability and choice response time data from a risk-taking decision-making task were compared with predictions made by a sequential sampling model. The behavioral data, consistent with the model, showed that participants were less likely to take an action as risk levels increased, and that time pressure did not have a uniform effect on choice probability. Under time pressure, participants were more conservative at the lower risk levels but were more prone to take risks at the higher levels of risk. This crossover interaction reflected a reduction of the threshold within a single decision strategy rather than a switching of decision strategies. Response time data, as predicted by the model, showed that participants took more time to make decisions at the moderate risk levels and that time pressure reduced response time across all risk levels, but particularly at the those risk levels that took longer time with no pressure. Finally, response time data were used to rule out the hypothesis that time pressure effects could be explained by a fast-guess strategy

Topics: BF
Year: 1999
DOI identifier: 10.3758/bf03211564
OAI identifier: oai:eprints.soton.ac.uk:18349
Provided by: e-Prints Soton
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