Abstract
Four pigeons were trained to peck at either of two response‐keys. Pecks at either key occasionally produced a secondary reinforcer, in the presence of which further pecks occasionally produced food, the primary reinforcer. All pigeons showed a consistent preference for variable (as compared to fixed) interval schedules of primary reinforcement.
Cite
CITATION STYLE
APA
Herrnstein, R. J. (1964). APERIODICITY AS A FACTOR IN CHOICE 1. Journal of the Experimental Analysis of Behavior, 7(2), 179–182. https://doi.org/10.1901/jeab.1964.7-179
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