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Temporal Expectations In Delay Of Gratification, Jeremy M. Haynes, Mariah E. Willis-Moore, D. Perez, Devanio J. Cousins, Amy L. Odum
Temporal Expectations In Delay Of Gratification, Jeremy M. Haynes, Mariah E. Willis-Moore, D. Perez, Devanio J. Cousins, Amy L. Odum
Psychology Faculty Publications
We examined how temporal expectations influence preference reversals in a delay of gratification task for rats based on a hypothesis of Rachlin (2000), who suggested that preference for a larger-later reward may shift in favor of a smaller-immediate reward as a result of changes in when that larger reward is expected. To explore Rachlin’s hypothesis, we pre-exposed two groups of rats to the delays associated with a larger-later reinforcer from a delay of gratification task. One group experienced the delays as a function of their choices in an intertemporal choice task and the other group experienced delays yoked from the …
Testing Delay Of Gratification In Rats Using A Within-Session Increasing-Delay Task, Jeremy M. Haynes, Amy L. Odum
Testing Delay Of Gratification In Rats Using A Within-Session Increasing-Delay Task, Jeremy M. Haynes, Amy L. Odum
Psychology Faculty Publications
In delay discounting, preference reversals refer to shifts in preference from a larger-later reward to a smaller-sooner reward. Steep hyperbolic discounting predicts a preference reversal when a smaller-sooner and larger-later reward both become temporally proximal; prior research is consistent with this prediction. Hyperbolic discounting does not predict a preference reversal, however, after an individual chooses a larger-later reward over a smaller-immediate reward; prior research is inconsistent with this prediction. We sought to replicate and extend these findings using a delay of gratification task in rats. The task included a defection response which allowed rats to reverse their preference after choosing …