期刊
PSYCHONOMIC BULLETIN & REVIEW
卷 11, 期 5, 页码 832-840出版社
PSYCHONOMIC SOC INC
DOI: 10.3758/BF03196709
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In two experiments, subjects were given arbitrary letter cues or meaningful word cues that specified the task to be performed on a subsequent target stimulus. Letter and word cues were presented in separate blocks. There were two cues of each type for each task. Three kinds of transitions separated tasks: cue repetitions, in which both the cue and the task repeated; task repetitions, in which the cue changed but the task repeated; and task alternations, in which both the cue and the task changed. Responses were faster for cue than for task repetitions for both cue types. With word cues, task repetitions were not reliably faster than task alternations. With letter cues, task repetitions were reliably faster than task alternations in the first block but not in the second block. The results suggest that subjects responded to the compound of the cue and the target rather than switching task set between trials.
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