@article{ref1,
title="Age-related performance in a multiple-task environment",
journal="Human factors",
year="1999",
author="Fisk, A. D. and Sit, R. A.",
volume="41",
number="1",
pages="26-34",
abstract="Younger and older adult participants performed a dynamic multiple-task requiring concurrent processing of 4 independent tasks. Component-task performance emphasis (i.e., task priorities) was biased by differential point allocations across task components. After training, the point structure was modified. Older adults exhibited larger multiple-task performance deficits compared with younger adults; however, the age-related gap in multiple-task performance decreased with practice. The age-related performance difference increased again when task emphasis was changed, but not when demands were changed. Consistent with the training data, the age-related differences diminished again with additional experience on this new task-component emphasis. The data suggest that higher-order, strategic processing may be an important source of age-related differences in complex multiple-task performance. Actual or potential applications of this research include the facilitation of techniques for age-related comprehensive usability testing for products of even moderate complexity.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}