Emotional reactions of rats to the pain of others

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Initially, any depressions in the rate of bar pressing of 1 rat during the pain responses of another adapted rapidly. When rats were given 6 1-sec. electric shocks, each following 30 sec. of shock to another rat, “Ss showed a dramatic depression in the rate of bar pressing to the pain response of another rat. This depression, considered a measure of anxiety, gradually extinguished, but it was still significantly present after 10 days.” Unshocked control Ss did not show this depression. Control rats given shock, but unassociated with the pain responses of another, showed a lesser depression than that of the experimental group. From Psyc Abstracts 36:01:1EF32C. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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