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Journal Article

Citation

Madden DJ. J. Exp. Psychol. Hum. Percept. Perform. 1992; 18(3): 821-836.

Affiliation

Center for the Study of Aging and Human Development, Duke University Medical Center, Durham, North Carolina 27710.

Copyright

(Copyright © 1992, American Psychological Association)

DOI

unavailable

PMID

1500878

Abstract

The present experiments examined a revised version of the Eriksen and Yeh model of attentional allocation during visual search. The results confirmed the assumption of the model that performance represents a weighted combination of focused- and distributed-attention trials, although Ss relied on focused attention more than was predicted. Consistent with the model, predictions on the basis of the assumption of a terminating search fit the data better than predictions on the basis of an exhaustive search. The effects of varying cue validity favored an interpretation of focused attention in terms of a processing gradient rather than a zoom lens. Although the allocation of attention across trials was similar for young and older adults, there was an age-related increase in the time required to allocate attention within individual trials.


Language: en

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