کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
918945 | 919860 | 2011 | 16 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: The modulation of operant variation by the probability, magnitude, and delay of reinforcement The modulation of operant variation by the probability, magnitude, and delay of reinforcement](/preview/png/918945.png)
Recent studies have demonstrated that the expectation of reward delivery has an inverse relationship with operant behavioral variation (e.g., Stahlman, Roberts, & Blaisdell, 2010). Research thus far has largely focused on one aspect of reinforcement – the likelihood of food delivery. In two experiments with pigeons, we examined the effect of two other aspects of reinforcement: the magnitude of the reward and the temporal delay between the operant response and outcome delivery. In the first experiment, we found that a large reward magnitude resulted in reduced spatiotemporal variation in pigeons’ pecking behavior. In the second experiment, we found that a 4-s delay between response-dependent trial termination and reward delivery increased variation in behavior. These results indicate that multiple dimensions of the reinforcer modulate operant response variation.
► Reward probability and magnitude modulate variability of pecking behavior in pigeons (Exp. 1).
► Reward probability and delay modulate variability of pecking behavior in pigeons (Exp. 2).
► Multiple components of reinforcement influence respondent variability.
► Evidence for negative relationship between response variability and reward expectation.
Journal: Learning and Motivation - Volume 42, Issue 3, August 2011, Pages 221–236