The Cognitive Neuroscience Laboratory
Abstracts
Decision Making Under Time Pressure: An Independent Test of Sequential Sampling Models
Itiel E. Dror, Jerry Busemeyer, & Beth Basola
Empirical behavioral data on a 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 increase, and that time pressure did not have a uniform effect on probability choice. Under time pressure participants were more conservative at the lower risk levels, but were more risky at the higher levels of risk. This crossover interaction reflected that time pressure reduces the threshold amount of information within a single decision strategy rather then switching decision strategies or simply guessing. Response time data, as predicted by the model, showed that participants took more time to make a decisions at the moderate risk levels, and that time pressure reduced response time across all risk levels, but in particularly at the those risk levels that took longer time with no pressure.
Memory & Cognition, 27, 713-725 (1999).
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