Neurocognitive Function and Suicide in U.S. Army Soldiers

Area of Science:

• Military health
• Neuroscience
• Psychiatry

Background:

• Suicidal events pose a significant risk in military populations.
• Understanding neurocognitive correlates of suicidal behavior is crucial for prevention.
• Previous research has not fully explored the predictive value of objective neurocognitive tests in this context.

Purpose of the Study:

• To examine the association between neurocognitive functioning and subsequent suicidal events in U.S. Army soldiers.
• To determine if objective neurocognitive tests can enhance the prediction of suicide risk.

Main Methods:

• Prospective cohort study using administrative data from the Army Study to Assess Risk and Resilience in Servicemembers (2004-2009).
• Inclusion of soldiers who completed the Automated Neuropsychological Assessment Metrics (ANAM) computerized testing battery prior to suicide attempt, ideation, or death.
• Logistic regression analyses controlling for sociodemographics and prior mental health diagnoses.

Main Results:

• A general neurocognitive factor, excluding mathematical processing, was associated with all suicidal outcomes.
• Mathematical processing tests also showed significant associations with suicide attempt and ideation.
• These associations remained robust even when both neurocognitive factors were examined simultaneously.

Conclusions:

• Objective neurocognitive tests, including those measuring mathematical processing, are associated with subsequent suicidal events in soldiers.
• These findings suggest that neurocognitive assessments may offer valuable insights for predicting suicide risk.
• Further research is warranted to integrate neurocognitive data into suicide risk assessment models.