TY  - JOUR
PY  - 1991//
TI  - An interactive race model of divided attention
JO  - Journal of experimental psychology: human perception and performance
A1  - Mordkoff, J. T.
A1  - Yantis, S.
SP  - 520
EP  - 538
VL  - 17
IS  - 2
N2  - Two classes of models have been proposed to explain how redundant information extracted from separate sources comes to activate a single response. Each provides a fundamentally different account of why responses to redundant signals are typically faster than those to either signal alone (the redundant-signals effect). Independent race models assume that a race occurs between perceptual codes on independent channels and that only the winner activates the response. Coactivation models assume that there is some form of energy or activation-strength summation, with information being pooled across channels prior to decision. An intermediate class of models is introduced and a specific exemplar, the interactive race model, is tested in a series of redundant-target detection experiments. In particular, we examine the effects on performance of two types of contingency that have previously been overlooked as sources of task-relevant information. The results reveal that response times are significantly influenced by both interstimulus and stimulus-response contingencies. The interactive race model provides a natural account of these findings as well as several otherwise puzzling results in the divided-attention literature.<p />  <p>Language: en</p>
LA  - en
SN  - 0096-1523
UR  - http://dx.doi.org/
ID  - ref1
ER  -