Timecourse of recovery from task interruption: Data and a model |
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Authors: | Erik M Altmann J Gregory Trafton |
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Institution: | Department of Psychology, Michigan State University, East Lansing, Michigan 48824, USA. ema@msu.edu |
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Abstract: | Interruption of a complex cognitive task can entail, for the “interruptee,” a sense of having to recover afterward. We examined
this recovery process by measuring the timecourse of responses following an interruption, sampling over 13,000 interruptions
to obtain stable data. Response times dropped in a smooth curvilinear pattern for the first 10 responses (15 sec or so) of
postinterruption performance. We explain this pattern in terms of the cognitive system retrieving a displaced mental context
from memory incrementally, with each retrieved element adding to the set of primes facilitating the next retrieval. The model
explains a learning effect in our data in which the timecourse of recovery changes over blocks, and is generally consistent
with current representational theories of expertise. |
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Keywords: | |
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