Abstract
The frequency of response by 5 monkeys to 3 visual and 5 tape-recorded auditory stimuli was obtained. The stimuli and their associated frequency of responses fell in the following, decreasing order; visual[long dash]caged monkey, caged dog, empty cage (standard condition); auditory [long dash]feeding sounds, single monkey, white noise (standard), rage, and dog sounds. Infrequency of response to dog, dog sounds, and rage sounds is interpreted as the result of the fear-arousing character of these stimuli.
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