Association for Behavior Analysis International

The Association for Behavior Analysis International® (ABAI) is a nonprofit membership organization with the mission to contribute to the well-being of society by developing, enhancing, and supporting the growth and vitality of the science of behavior analysis through research, education, and practice.


48th Annual Convention; Boston, MA; 2022

Event Details

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Paper Session #425
Evaluation of Reinforcement and Extinction Processes on an Animal Model of ADHD
Monday, May 30, 2022
9:00 AM–9:25 AM
Meeting Level 1; Room 154
Area: BPN
Chair: Fabio Leyser Goncalves (Universidade Estadual Paulista)

Evaluation of Reinforcement and Extinction Processes on an Animal Model of ADHD

Domain: Basic Research
FABIO LEYSER GONCALVES (School of Sciences – São Paulo State University; Graduate Program on Neuroscience and Behavior - University of São Paulo)

Several studies with Spontaneously Hypertensive Rats (SHR) implicate reinforcement and extinction deficits as their main differences from other lineages. In this paper, data of six experiments were revised to address these main deficits. On experiment 1, SHR were compared to Wistar rats in a multiple FI-Ext schedule of reinforcement, results failed to replicate differences between lineages. This result could be related to inadequate behavior of control group, as well as absence of a feedback light that is commonly used. To investigate these two hypotheses, two experiments investigated both the feedback light (FBL)condition and the control group used. These experiments didn’t show an FBL effect, but replicated differences among lineages (SHR, Wistar and Wistar Kyoto). An interesting finding is that SHR received more reinforcers than other strains, on FI component. Two other experiments investigated conditioned reinforcement on SHR and controls but didn’t indicate a conditioned reinforcement (CR) deficit or a sensory reinforcement hypersensitivity, as is usually suggested by the literature. Experiment 4 raises the hypothesis of a deficit on the extinction of CR. Experiment 6 revealed consistent differences on extinction of a food-maintained response. Together, experiments point to a major deficit on extinction, but does not support alterations on reinforcement processes.




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