PubMed · 13944949
Fixed-interval performances with added stimuli in monkeys.
Abstract
The performance of two monkeys, on fixed-interval schedules, was examined with a visual, an auditory and a combined auditory-visual clock. The clock, a voltmeter and/or a variable frequency tone, produced performances different in many aspects from those recorded earlier with pigeons. Instead of the sustained high rates of responding at the optimal settings of the clock, the monkey's rates of responding were often extremely low even though a limited-hold contingency was utilized.
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C B FERSTER, J ZIMMERMAN. 1963. Fixed-interval performances with added stimuli in monkeys.. https://doi.org/10.1901/jeab.1963.6-317
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