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Measuring Delay Discounting in Humans Using an Adjusting Amount Task
07:47

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Published on: January 9, 2016

Delay discounting in schizophrenia.

Erin A Heerey1, Benjamin M Robinson, Robert P McMahon

  • 1Maryland Psychiatric Research Center, University of Maryland, Baltimore, MD, USA. e.heerey@bangor.ac.uk

Cognitive Neuropsychiatry
|April 25, 2007
PubMed
Summary
This summary is machine-generated.

Individuals with schizophrenia exhibit impulsive decision-making, discounting future rewards more steeply than healthy individuals. This impulsivity is linked to memory capacity and negative symptoms, suggesting cognitive function impacts future-oriented choices.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Individuals with schizophrenia often experience dopaminergic abnormalities and memory deficits.
  • These factors are frequently associated with difficulties in decision-making, particularly impulsive choices.
  • Impulsive decision-making is a significant concern in schizophrenia, impacting long-term well-being.

Purpose of the Study:

  • To investigate the degree of future-oriented decision-making in patients with schizophrenia.
  • To assess the relationship between delay discounting, cognitive function, and symptom severity in schizophrenia.
  • To understand the cognitive underpinnings of impulsive choices in this population.

Main Methods:

  • A delay discounting task was administered to 42 patients with schizophrenia and 29 healthy controls.
  • Participants also completed cognitive function assessments.
  • Schizophrenia patients provided symptom ratings.

Main Results:

  • Patients with schizophrenia demonstrated significantly steeper delay discounting compared to healthy participants.
  • Steeper discounting in patients was correlated with poorer memory capacity.
  • A trend suggested an inverse relationship between delay discounting and negative symptom severity.

Conclusions:

  • The findings indicate that individuals with schizophrenia tend to favor immediate rewards over delayed, potentially larger rewards.
  • This impulsive decision-making pattern may stem from impaired cognitive functions, particularly memory.
  • Interventions aimed at improving cognitive function could potentially enhance future-oriented decision-making in schizophrenia.