Reference : Incentive salience attribution under reward uncertainty: A Pavlovian model
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
http://hdl.handle.net/2268/174387
Incentive salience attribution under reward uncertainty: A Pavlovian model
English
Anselme, Patrick mailto [Université de Liège - ULg > Département de Psychologie : cognition et comportement > Neuroscience comportementale et psychopharmacologie expér. >]
2015
Behavioural Processes
Elsevier Science
111
1
6-18
Yes (verified by ORBi)
International
0376-6357
Amsterdam
The Netherlands
[en] partial reinforcement ; motivation ; learning ; dopamine ; frustration
[en] There is a vast literature on the behavioural effects of partial reinforcement in Pavlovian conditioning. Compared with animals receiving continuous reinforcement, partially rewarded animals typically show (a) a slower development of the conditioned response (CR) early in training and (b) a higher asymptotic level of the CR later in training. This phenomenon is known as the partial reinforcement acquisition effect (PRAE). Learning models of Pavlovian conditioning fail to account for it. In accordance with the incentive salience hypothesis, it is here argued that incentive motivation (or ‘wanting’) plays a more direct role in controlling behaviour than does learning, and reward uncertainty is shown to have an excitatory effect on incentive motivation. The psychological origin of that effect is discussed and a computational model integrating this new interpretation is developed. Many features of CRs under partial reinforcement emerge from this model.
Researchers
http://hdl.handle.net/2268/174387
10.1016/j.beproc.2014.10.016

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