Testing the transdiagnostic hypothesis of inhibitory control deficits in addictions: An experimental study on gambling disorder

Author:

Penolazzi Barbara1ORCID,Del Missier Fabio1,Stramaccia Davide Francesco2,Monego Anna Laura2,Castelli Luigi2,Manzan Amalia3,Bertoli Marco4,Galfano Giovanni2ORCID

Affiliation:

1. 1Department of Life Sciences, University of Trieste, Via Weiss, 21, I-34128, Trieste, Italy

2. 2Department of Developmental and Social Psychology, University of Padova, Via Venezia, 8, I-35131, Padova, Italy

3. 3Unità Locale Socio Sanitaria, Belluno, Italy

4. 4Azienda per l'Assistenza Sanitaria 2 Bassa Friulana-Isontina, Italy

Abstract

AbstractBackground and aimsMany psychopathologies, including addictions, are characterized by inhibitory control deficits. In this regard, recent studies on substance-related disorders (SRD) have shown an impairment in the ability to inhibit potentially interfering memories, despite preserved motor inhibition. To investigate whether the same dissociation could also characterize gambling disorder (GD) in a transdiagnostic perspective, we tested both cognitive and motor inhibitory processes through dedicated tasks, for the first time in this behavioral addiction.Methods30 outpatients with GD and 30 healthy controls performed a go/no-go task addressing the integrity of motor inhibition, and the Retrieval Practice Paradigm, a task addressing the integrity of memory inhibition as indexed by the Retrieval-Induced Forgetting (RIF) effect. Self-report questionnaires assessing impulsivity were also administered.ResultsWhereas RIF was similar across the two groups, patients showed more commission errors in the go/no-go task, and higher self-rated scores of impulsivity than controls.DiscussionThe present findings suggest preserved memory inhibition and impaired motor response inhibition in GD, a pattern of inhibitory deficits opposite to that previously reported for SRD. Therefore, although both GD and SRD are characterized by altered inhibitory processing, a more fine-grained analysis revealed a specific inhibitory profile indicating vulnerability in different inhibitory components.ConclusionThe present study highlights the need to investigate the multifaceted construct of inhibition more thoroughly, using performance measures able to assess its various components. This approach would enable to both better characterize different psychopathologies and orient their treatment.

Funder

University of Padova

Publisher

Akademiai Kiado Zrt.

Subject

Psychiatry and Mental health,Clinical Psychology,General Medicine,Medicine (miscellaneous)

Reference84 articles.

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3. Retrieval-induced forgetting and clinical depression;Groome;Cognition & Emotion,2010

4. Remembering can cause forgetting: Retrieval dynamics in long term forgetting;Anderson;Journal of Experimental Psychology: Learning, Memory, and Cognition,1994

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