Two experiments were performed in order to determine subjects' maximum information-processing capacity under dual task conditions and to provide empirical evidence regarding the localization of the divided attention effect. The results suggest that performance on the primary task deteriorates as a joint function of both primary and secondary task processing loads. These data support the locus of interference being within the control-processing (memory-dependent) and response-selection stages of the processing system.
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References
1.
BriggsG.PetersG.FisherP.On the locus of the divided-attention effects. Perception & Psychophysics, 1972, 11, 315–320.
2.
FrickF. C.Information theory. In KochS. (Ed.), Psychology: A study of a science.New York: McGraw-Hill, 1959. Vol. 2. Pp. 611–636.
3.
MorayN.Attention: Selective processes in vision and hearing.London: Hutchinson Education, 1969.
4.
SmithE. E.Choice reaction time, an analysis of the major theoretical positions. Psychological Bulletin, 1968, 69, 77–110.
5.
SmithM. C.Effect of varying channel capacity on stimulus detection and discrimination. Journal of Experimental Psychology, 1969, 82, 520–526.
6.
WelfordA. T.Fundamentals of skill.London: Methuen, 1968.
