Time estimation and expectancies

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Abstract
The purpose of this research was to examine the influence of different types of expectancies on time estimation behavior. In Experiment 1, subjects were led to expect that a given number of trials would occur in a music perception task. In Experiment 2, expectancies concerning the duration of a given waiting period were varied. Results of both experiments indicated that the confirmation/violation of expectancies exerted a significant im acton4urationjudgments. When subjects received more/fewer trials than expected or waited for a duration-that-waslonger/shorter than expected, the total duration of these time spans was over- and underestimated, respectively. Conversely, time estimates were relatively accurate whensubjects' expectancies were confirmed. The results of Experiment 1 further revealedthat reaction time responses within-the-music perception task were also systematically influenced by the expected amount of activity. Results are discussed in terms of a framework that emphasizes the role of anticipatory attending on time estimation behavior.

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