@article{ref1,
title="Dual-task performance with ideomotor-compatible tasks: is the central processing bottleneck intact, bypassed, or shifted in locus?",
journal="Journal of experimental psychology: human perception and performance",
year="2005",
author="Lien, Mei-Ching and McCann, Robert S. and Ruthruff, Eric and Proctor, Robert W.",
volume="31",
number="1",
pages="122-144",
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.<p /><p>Language: en</p>",
language="en",
issn="0096-1523",
doi="10.1037/0096-1523.31.1.122",
url="http://dx.doi.org/10.1037/0096-1523.31.1.122"
}