Behavioral variability in SHR and WKY rats as a function of rearing environment and reinforcement contingency

Journal of the Experimental Analysis of Behavior
M H HunzikerA Neuringer

Abstract

The spontaneously hypertensive rat (SHR) may model aspects of human attention deficit hyperactivity disorder (ADHD). For example, just as responses by children with ADHD tend to be variable, so too SHRs often respond more variably than do Wistar-Kyoto (WKY) control rats. The present study asked whether behavioral variability in the SHR strain is influenced by rearing environment, a question related to hypotheses concerning the etiology of human ADHD. Some rats from each strain were reared in an enriched environment (housed socially), and others were reared in an impoverished environment (housed in isolation). Four groups--enriched SHR, impoverished SHR, enriched WKY, and impoverished WKY--were studied under two reinforcement contingencies, one in which reinforcement was independent of response variability and the other in which reinforcement depended upon high variability. The main finding was that rearing environment did not influence response variability (enriched and impoverished subjects responded similarly throughout). However, rearing environment affected body weight (enriched subjects weighted more than impoverished subjects) and response rate (impoverished subjects generally responded faster than enriched subjects). In ...Continue Reading

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Citations

Dec 9, 2004·The American Psychologist·Allen Neuringer
Jan 6, 2010·Behavioral and Brain Functions : BBF·Lisa LitAnita M Oberbauer
Sep 7, 2013·PloS One·Thomas-A SontagKlaus W Lange
Aug 29, 2006·Learning & Behavior·Katie Wagner, Allen Neuringer
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Apr 3, 2018·BMC Biotechnology·Tomoe KobayashiMakoto Matsuyama
Mar 5, 2003·Psychonomic Bulletin & Review·Allen Neuringer
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Mar 2, 2013·The Behavior Analyst·Allen Neuringer
Dec 3, 2016·Behavioral and Brain Functions : BBF·Ole Bernt Fasmer, Espen Borgå Johansen
Mar 2, 2013·The Behavior Analyst·Lourenço de Souza Barba
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Dec 2, 2017·Journal of the Experimental Analysis of Behavior·Amilcar Rodrigues Fonseca Júnior, Maria Helena Leite Hunziker
Oct 23, 2021·Scientific Reports·Masumi NambaMakoto Matsuyama
Apr 21, 2011·Behavioural Brain Research·Joy Simpson, John P Kelly

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