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Impulsivity in pathological gambling (PG) is linked to comorbid nicotine dependence (ND). Maladaptive choices are specific to PG, while response impulsivity is shared with ND, suggesting targeted interventions for these conditions.

Keywords:
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Area of Science:

  • Neuroscience
  • Psychiatry
  • Behavioral Science

Background:

  • Increased impulsivity is a key factor in pathological gambling (PG).
  • The influence of comorbid mental disorders, particularly nicotine dependence (ND), on impulsivity in PG is not fully understood.
  • ND is highly comorbid with PG and also associated with heightened impulsivity.

Purpose of the Study:

  • To determine if increased impulsivity in PG is a general characteristic of comorbid mental disorders or specifically linked to comorbid ND.
  • To differentiate impulsivity patterns in pathological gambling with and without nicotine dependence.

Main Methods:

  • A cross-sectional study comparing a healthy control group with three disorder groups: PG without ND, PG with ND, and ND alone.
  • Assessment of impulsivity using behavioral and self-report measures, focusing on response and choice impulsivity dimensions.
  • Diagnosis based on the Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition (DSM-IV).

Main Results:

  • Comorbid PG exhibited increased response impulsivity compared to controls.
  • Choice impulsivity was significantly higher in both PG without ND and PG with ND groups when compared to the ND alone group.
  • No other significant group differences in impulsivity were found.

Conclusions:

  • Comorbid PG shares deficits in inhibitory control (response impulsivity) with ND.
  • Maladaptive choice impulsivity appears to be a specific characteristic of comorbid PG, distinguishing it from ND.
  • Interventions targeting cognitive control may benefit both PG and ND, while reward valuation strategies could be specific to comorbid PG.