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Clever homunculus: Is there an endogenous act of control in the explicit task-cuing procedure (2003)
| Venue: | Journal of Experimental Psychology: Human Perception and Performance |
| Citations: | 103 - 20 self |
BibTeX
@ARTICLE{Logan03cleverhomunculus:,
author = {Gordon D. Logan and Claus Bundesen},
title = {Clever homunculus: Is there an endogenous act of control in the explicit task-cuing procedure},
journal = {Journal of Experimental Psychology: Human Perception and Performance},
year = {2003}
}
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Abstract
Does the explicit task-cuing procedure require an endogenous act of control? In 5 experiments, cues indicating which task to perform preceded targets by several stimulus onset asynchronies (SOAs). Two models were developed to account for changes in reaction time (RT) with SOA. Model 1 assumed an endogenous act of task switching for cue alternations but not for cue repetitions. Model 2 assumed no such act. In Experiments 1 and 2, the cue was masked or not masked. Masking interacted underadditively with repetition and alternation, consistent with Model 2 but not Model 1. In Experiments 3 and 4, 2 cues were used for each task. RT was slower for task repetition than for cue repetition and about the same as RT for task alternation, consistent with Model 2 but not Model 1. The results suggest that the explicit task-cuing procedure does not require an endogenous act of control. Clever Hans was a remarkable horse who could add, subtract, multiply, and divide numbers, working with fractions as well as integers. His owner, von Osten, would ask him questions and Hans would tap out the answers with his hoof. An early experimental psychologist, Oskar Pfungst (1907, 1911), investigated Hans’s ability and found that the horse responded to subtle visual cues
