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Madden, David J.; Mitchell, David B. – 1983
In recent research, two qualitatively different classes of mental operations have been identified. The performance of one type of cognitive task requires attention, in the sense of mental effort, for its execution, while the second type can be performed automatically, independent of attentional control. Further research has shown that automatic…
Descriptors: Age Differences, Aging (Individuals), Attention, Cognitive Processes
