List Differentiation with Varied Trials on Both Lists

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Science  20 May 1966:
Vol. 152, Issue 3725, pp. 1101-1102
DOI: 10.1126/science.152.3725.1101


Differentiation, defined as the discrimination of list membership, was studied with a recognition procedure. In each of the two studies, the number of learning trials was varied for one list and the trials on the other list were held constant. Differentiation was a U-shaped function of trials, passing through a minimum when both lists were shown equally often.