Retention in Rats: The Effect of Proactive Interference

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Science  27 Dec 1963:
Vol. 142, Issue 3600, pp. 1683-1684
DOI: 10.1126/science.142.3600.1683


Four groups of rats were trained to make a simple spatial discrimination. Two of the groups had previously been trained to make the reverse discriminations, the other two had no prior training. Two groups were tested I day after training, while two others were tested 44 days after training. There was no retention loss unless prior interference had been provided.