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.


46th Annual Convention; Online; 2020

Event Details

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Paper Session #19
Evaluation of Conditioned Reinforcement on Spontaneously Hypertensive Rats
Saturday, May 23, 2020
10:00 AM–10:20 AM
Area: EAB
Chair: Fabio Leyser Goncalves (Universidade Estadual Paulista)
Evaluation of Conditioned Reinforcement on Spontaneously Hypertensive Rats
Domain: Basic Research
FABIO LEYSER GONCALVES (Universidade Estadual Paulista), Beatriz Guimarães (Paradigma), Guilherme Popowicz (Universidade de São Paulo), Juliana Brasileiro (Universidade Federal de São João Del Rey)
Abstract: Spontaneously Hypertensive Rats (SHR)has been considered as a valid animal model of attention deficit hyperactivity disorder (ADHD). Several theories propose that ADHD would be less responsive to positive reinforcement, especially delayed and conditioned reinforcement. The aim of this paper is to compare conditioned reinforcement on SHR, Wistar Kyoto (WKY) and Wistar rats. For that 16 SHR, 15 WKY and 12 Wistar were submitted to a Multiple FI2min-Ext5min schedule where a feedback light was manipulated (Experiment 1) or to a conditioned reinforcement procedure where a 3s lights-off stimulus (LO) was associated to food with or without delay, and then tested as reinforcer under extinction for the primary reinforcer (Experiment 2). On Experiment 1, ANOVA Type Nonparametric Statistics indicated differences between strains [F (1,644, 16) = 12.097; p<0.001], but not feedback light as conditioned reinforcement [F (1, 14.61985) = 2.688; NS]. Experiment 2 Indicated a main effect of strain [F(1.9, 4.3) = 3.199; p<0.05], lever [F(1, 8)=64.862; p<0.001], and phase [F(4.3, 3.6) = 4.977; p<0.001] and all interactions (between p<0.001 and p<0.05). Relative treatment effects indicated that SHR responded more under extinction than WKY and WIS. Together, experiments suggests that SHR would have a greater deficit on extinction than on reinforcement process.



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