A Dynamic Context Model of Interactive Behavior
Version of Record online: 7 MAR 2011
Copyright © 2011 Cognitive Science Society, Inc.
Volume 35, Issue 5, pages 874–904, July 2011
How to Cite
Fu, W.-T. (2011), A Dynamic Context Model of Interactive Behavior. Cognitive Science, 35: 874–904. doi: 10.1111/j.1551-6709.2011.01173.x
- Issue online: 7 JUL 2011
- Version of Record online: 7 MAR 2011
- Received 14 October 2009; received in revised form 10 October 2010; accepted 10 December 2010
- Extended mind;
- Dynamic context;
- Interactive cognition;
- Cognitive model;
- Soft constraints;
A dynamic context model of interactive behavior was developed to explain results from two experiments that tested the effects of interaction costs on encoding strategies, cognitive representations, and response selection processes in a decision-making and a judgment task. The model assumes that the dynamic context defined by the mixes of internal and external representations and processes are sensitive to the interaction cost imposed by the task environment. The model predicts that changes in the dynamic context may lead to systematic biases in cognitive representations and processes that eventually influence decision-making and judgment outcomes. Consistent with the predictions by the model, results from the experiments showed that as interaction costs increased, encoding strategies and cognitive representations shifted from perception-based to memory-based. Memory-based comparisons of the stimuli enhanced the similarity and dominance effects, and led to stronger systematic biases in response outcomes in a choice task. However, in a judgment task, memory-based representations enhanced only the dominance effects. Results suggested that systematic response biases in the dominance context were caused by biases in the cognitive representations of the stimuli, but response biases in the similarity context were caused by biases in the comparison process induced by the choice task. Results suggest that changes in interaction costs not only change whether information was assessed from the external world or from memory but also introduce systematic biases in the cognitive representation of the information, which act as biased inputs to the subsequent decision-making and judgment processes. Results are consistent with the idea of interactive cognition, which proposes that representations and processes are contingent on the dynamic context defined by the information flow between the external task environment and internal cognition.