RESPONSE BIAS AND THE DISCRIMINATION OF STIMULUS DURATION1
- 1 March 1976
- journal article
- research article
- Published by Wiley in Journal of the Experimental Analysis of Behavior
- Vol. 25 (2) , 243-250
- https://doi.org/10.1901/jeab.1976.25-243
Abstract
Pigeons discriminated stimulus duration in a psychophysical choice situation. Following presentation of any duration from a set of short durations (11 to 15 sec), responses on a red key were reinforced intermittently. Following presentation of any duration from a set of long durations (16 to 22 sec), responses on a green key were reinforced intermittently. Relative reinforcement rates were manipulated for choice responses across conditions. As relative reinforcement rates were varied, psychometric functions showed shifts in green-key responses at all durations. A signal-detection analysis showed that sensitivity remained roughly constant across conditions while response bias changed as a function of changes in relative reinforcement rate. Relative error rates tended to match relative reinforcement rates.Keywords
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