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Full-Text Articles in Educational Psychology
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 …
Reinforced Behavioral Variability In The Valproate Rat Model Of Autism Spectrum Disorder, Ann Galizio, Amy L. Odum
Reinforced Behavioral Variability In The Valproate Rat Model Of Autism Spectrum Disorder, Ann Galizio, Amy L. Odum
Psychology Faculty Publications
Individuals diagnosed with autism spectrum disorder (ASD) tend to display restricted, repetitive behaviors and deficits in social interaction. Rats exposed to valproate (VPA) in utero have been shown to model symptoms of ASD. In previous research, VPA rats engaged in less social interaction and more repetitive responding than controls. The purpose of the present study was to further investigate behavioral variability in the VPA rat model of ASD by testing VPA and control rats in a reinforced-behavioral-variability operant task. In this procedure, rats emitted sequences of lever presses, some of which produced food. During baseline, food was delivered probabilistically, and …