Motor impulsivity differentiates between psychiatric inpatients with multiple versus single lifetime suicide attempts

Area of Science:

• Psychiatry
• Psychology
• Behavioral Science

Background:

• A history of multiple suicide attempts is a significant predictor of future suicide risk.
• Impulsivity is hypothesized to mediate the relationship between prior suicide attempts and increased risk.

Purpose of the Study:

• To investigate trait impulsivity, goal-directed behavior, and impulse control in individuals with a history of single versus multiple suicide attempts.
• To examine motor impulsivity as a potential explanatory factor for the elevated suicide risk associated with multiple attempts.

Main Methods:

• Cross-sectional study design.
• Assessment of trait impulsivity, goal-directed behaviors, and impulse control.
• Comparison between psychiatrically hospitalized United States military personnel and their dependents with single versus multiple suicide attempt histories.

Main Results:

• Individuals with a history of multiple suicide attempts exhibited significantly higher levels of motor impulsivity compared to those with a single attempt history.
• Motor impulsivity, characterized by "spur of the moment" actions, was significantly associated with a history of multiple suicide attempts.

Conclusions:

• Motor impulsivity is a key characteristic differentiating individuals with multiple suicide attempts from those with single attempts.
• Clinicians should directly assess and target motor impulsivity in suicidal patients.
• Further research is warranted to explore motor impulsivity's role as a mechanism in suicide prevention interventions.