Dual-Task Performance with Ideomotor-Compatible Tasks: Is the Central Processing Bottleneck Intact, Bypassed, or Shifted in Locus?
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| Title: | Dual-Task Performance with Ideomotor-Compatible Tasks: Is the Central Processing Bottleneck Intact, Bypassed, or Shifted in Locus? |
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| Language: | English |
| Authors: | Lien, Mei-Ching, McCann, Robert S., Ruthruff, Eric |
| Source: | Journal of Experimental Psychology: Human Perception and Performance. Feb 2005 31(1):122-144. |
| Availability: | American Psychological Association, 750 First Street, NE, Washington, DC 20002-4242. Tel: 800-374-2721 (Toll Free); Tel: 202-336-5510; TDD/TTY: 202-336-6123; Fax: 202-336-5502; e-mail: journals@apa.org. |
| Peer Reviewed: | Y |
| Page Count: | 22 |
| Publication Date: | 2005 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Psychological Studies, Simulation, Psychological Patterns, Cognitive Processes, Psychomotor Skills |
| ISSN: | 0096-1523 |
| Abstract: | The present study examined whether the central bottleneck, assumed to be primarily responsible for the psychological refractory period (PRP) effect, is intact, bypassed, or shifted in locus with ideomotor (IM)-compatible tasks. In 4 experiments, factorial combinations of IM- and non-IM-compatible tasks were used for Task 1 and Task 2. All experiments showed substantial PRP effects, with a strong dependency between Task 1 and Task 2 response times. These findings, along with model-based simulations, indicate that the processing bottleneck was not bypassed, even with two IM-compatible tasks. Nevertheless, systematic changes in the PRP and correspondence effects across experiments suggest that IM compatibility shifted the locus of the bottleneck. The findings favor an engage-bottleneck-later hypothesis, whereby parallelism between tasks occurs deeper into the processing stream for IM- than for non-IM-compatible tasks, without the bottleneck being actually eliminated. |
| Abstractor: | Author |
| Entry Date: | 2005 |
| Access URL: | https://www.apa.org/journals |
| Accession Number: | EJ689108 |
| Database: | ERIC |
| Abstract: | The present study examined whether the central bottleneck, assumed to be primarily responsible for the psychological refractory period (PRP) effect, is intact, bypassed, or shifted in locus with ideomotor (IM)-compatible tasks. In 4 experiments, factorial combinations of IM- and non-IM-compatible tasks were used for Task 1 and Task 2. All experiments showed substantial PRP effects, with a strong dependency between Task 1 and Task 2 response times. These findings, along with model-based simulations, indicate that the processing bottleneck was not bypassed, even with two IM-compatible tasks. Nevertheless, systematic changes in the PRP and correspondence effects across experiments suggest that IM compatibility shifted the locus of the bottleneck. The findings favor an engage-bottleneck-later hypothesis, whereby parallelism between tasks occurs deeper into the processing stream for IM- than for non-IM-compatible tasks, without the bottleneck being actually eliminated. |
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| ISSN: | 0096-1523 |
