Discriminative stimuli that follow a delay have added value for pigeons |
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Authors: | Kelly?A?Digian Andrea?M?Friedrich Email author" target="_blank">Thomas?R?ZentallEmail author |
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Institution: | University of Kentucky, Lexington, Kentucky 40506-0044, USA. |
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Abstract: | Clement, Feltus, Kaiser, and Zentall (2000) reported that pigeons prefer discriminative stimuli that require greater effort
(more pecks) to obtain over those that require less effort. In the present experiment, we examined two variables associated
with this phenomenon. First, we asked whether delay of reinforcement, presumably a relatively aversive event similar to effort,
would produce similar effects. Second, we asked whether the stimulus preference produced by a prior relatively aversive event
depends on its anticipation. Anticipation of delay was accomplished by signaling its occurrence. Results indicated that delays
can produce preferences similar to those produced by increased effort, but only if the delays are signaled. |
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