| Autor: |
Brown, Scott, Lehmann, Curtis, Poboka, Dane |
| Zdroj: |
Psychonomic Bulletin & Review; February 2006, Vol. 13 Issue: 1 p152-159, 8p |
| Abstrakt: |
Abstract: When people switch between two tasks, their performance on each is worse than when they perform that task in isolation. One theory of this “switch cost” is the failure-to-engage (FTE) theory, which posits that observed responses are a simple mixture of prepared and unprepared response strategies. The probability that participants use prepared processes can be manipulated experimentally (e.g., by changing preparation time). The FTE theory is a binary mixture model and therefore makes a strong prediction about the existence of fixed points in response time distributions. We found evidence contradicting this prediction, using data from 20 participants in a standard task-switching paradigm. In this article, we examine reasons for the failure of the FTE theory, and we demonstrate that a generalized version of FTE theory accommodates our data. |
| Databáze: |
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