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Excessive checking behavior during an image comparison task in schizophrenia.

N Jaafari1, N Chopin2, C Levy3

  • 1Unité de recherche clinique intersectorielle en psychiatrie à vocation régionale Pierre-Deniker, centre hospitalier Henri-Laborit, Poitiers, France; Inserm UMR S1084, laboratoire de neurosciences expérimentales et cliniques, université de Poitiers, pôle biologie-santé, Poitiers, France; CIC-P Inserm U 802, université de médecine et de pharmacie de Poitiers, centre hospitalier universitaire de Poitiers, Poitiers, France; Groupement de recherche CNRS GDR 3557.

European Psychiatry : the Journal of the Association of European Psychiatrists
|January 10, 2015
PubMed
Summary
This summary is machine-generated.

Patients with schizophrenia exhibit excessive checking behaviors, but unlike in obsessive-compulsive disorder, this is not linked to working memory deficits. This suggests different underlying causes for checking behaviors in these conditions.

Keywords:
Checking behaviorExecutive functionsEye-trackingObsessive-compulsive disorderSchizophreniaWorking memory

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Area of Science:

  • Cognitive Neuroscience
  • Psychiatry

Background:

  • Schizophrenia is characterized by significant working memory and executive function deficits.
  • Working memory dysfunction is implicated as a cause of compulsive checking behaviors in obsessive-compulsive disorder (OCD).

Purpose of the Study:

  • To assess if schizophrenia patients are impaired on an image comparison task measuring checking behaviors.
  • To determine if the origin and profile of impairment differ between schizophrenia and OCD regarding checking behaviors.

Main Methods:

  • Utilized eye movement recordings to evaluate checking behavior in 24 schizophrenia patients and 24 controls.
  • Assessed verbal and visuo-spatial working memory using reading span and backward location span tests.

Main Results:

  • Schizophrenia patients demonstrated reduced working memory spans compared to controls.
  • Patients with schizophrenia exhibited excessive checking behavior during image comparison.
  • The intensity of checking behavior in schizophrenia was not significantly correlated with working memory deficits.

Conclusions:

  • Excessive checking behaviors in OCD are linked to working memory dysfunction.
  • The lack of correlation between checking behavior and working memory deficits in schizophrenia suggests distinct underlying mechanisms compared to OCD.