Four tasks were tested in single and pairwise combined performances to investigate their mutual interference. The results demonstrate that functionally dissimilar tasks, in terms of the activities required in processing and responding, can be performed together with much less decrement than functionally identical tasks. The short-term memory function, furthermore, is extremely disruptive when required in one or both of two simultaneously performed discrete, reaction-time tasks.
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References
1.
CrooksW. H.RoscoeS. N.Varied and fixed-error limits on automated adaptive skill training. Proceedings of the seventeenth annual meeting of the Human Factors Society, Santa Monica, Calif., Human Factors Society, 1973.
2.
GopherD.NorthR. A.The measurement of attention capacity through concurrent task performance with individual difficulty levels and shifting priorities. Proceedings of the Eighteenth Annual Meeting of the Human Factors Society, Santa Monica, Calif.: Human Factors Society, 1974.
3.
KerrB.Processing demands during mental operations. Memory and Cognition, 1973, 1, 401–412.
4.
RolfeJ. M.The secondary task as a measure of mental load. Measurement of Man at Work. London: Taylor and Francis, 1973.
