Evidence map›Paper›PMID 42171692›Full record

ArticlePsychopharmacology2026

Probing the habitual and compulsive-like basis of (dys)functional checking in the Observing Response Task, a rodent analogue relevant to obsessive-compulsive disorder.

Luise Pickenhan, Amy L Milton

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Article in Psychopharmacology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

2 authors.

Luise PickenhanDepartment of Psychology, University of Cambridge Downing Site, CB2 3EB, Cambridge, United Kingdom.
Amy L MiltonDepartment of Psychology, University of Cambridge Downing Site, CB2 3EB, Cambridge, United Kingdom. alm46@cam.ac.uk.ORCID http://orcid.org/0000-0003-0175-9417

Funding

Biotechnology and Biological Sciences Research Council BB/W001195/1
6 · The paper itself

Abstract

rationaleExcessive and maladaptive checking is a prominent symptom of obsessive-compulsive disorder (OCD). This dysfunctional checking can be modelled using the Observing Response Task (ORT), which distinguishes between functional and dysfunctional checking shown by the same individuals, in rodents and humans. We have previously observed that rats classified as sign-trackers on a pavlovian autoshaping procedure show elevated levels of dysfunctional checking.

objectivesWe sought to determine whether dysfunctional checking was habitual and compulsive.

methods119 Lister Hooded rats (M = 95, F = 24) were classified using pavlovian autoshaping and concurrently underwent ORT training. Briefly, rats learned to respond on one of two levers to receive reinforcement, with the correct lever changing unpredictably throughout the session. Pressing a third, 'observing' lever illuminated a light cue over the currently correct lever. These functional Observing Lever Presses (OLPs) can be distinguished from dysfunctional Extra Observing Lever Presses (eOLPs), which have no programmed consequences. Whether dysfunctional checking was habitual was examined by degrading the contingency between checking and light cue presentation, and whether it was compulsive was determined by punishing 50% of checking responses.

resultsSign-trackers showed higher levels of dysfunctional checking than goal-trackers and intermediates, including after contingency degradation. Punished checking eradicated checking behaviour in most rats, but a minority of sign-trackers persisted despite punishment via shock.

conclusionsThese data support the hypothesis that sign-trackers exhibit more cue-driven checking behaviour than goal-trackers. Observations from punished checking refer to the prevalence of severe OCD in the human population concerning persistence of pathological checking despite aversive consequences.

Indexed as

Behavior, AnimalCompulsive BehaviorObsessive-Compulsive DisorderAnimalsConditioning, ClassicalConditioning, OperantCuesDisease Models, AnimalMalePunishmentRatsReinforcement, PsychologyCheckingContingency degradationObserving Response TaskObsessive-Compulsive DisorderPunishmentRat

Identifiers

PMID42171692
PMCPMC13242449

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