Repetitive negative thinking as a unique transdiagnostic risk factor for suicidal ideation

Area of Science:

• Psychiatry
• Clinical Psychology
• Mental Health Research

Background:

• Repetitive negative thinking (RNT) is a common symptom across mood and anxiety disorders.
• RNT is characterized by frequent, distressing, and uncontrollable thoughts.
• Previous research on RNT and suicide risk has often focused on specific disorders and RNT subtypes.

Purpose of the Study:

• To investigate the association between transdiagnostic RNT and suicidal ideation.
• To determine if RNT is associated with suicide risk independently of disorder-specific clinical symptoms.
• To explore the clinical utility of assessing RNT for suicide risk stratification.

Main Methods:

• Fifty-four participants with mood, anxiety, and/or traumatic stress disorders were recruited.
• Suicidal risk was assessed using the Columbia-Suicide Severity Rating Scale (C-SSRS).
• Transdiagnostic RNT, depression, and anxiety were measured via self-report questionnaires.

Main Results:

• Participants were categorized into high or low suicide risk groups based on C-SSRS scores.
• RNT was found to be uniquely associated with the suicide risk group.
• This association remained significant after controlling for depression and anxiety severity.

Conclusions:

• Transdiagnostic RNT is a significant indicator of suicide risk, beyond general symptom severity of depression and anxiety.
• Assessing RNT may enhance clinical understanding of an individual's suicide risk.
• Clinical interventions targeting RNT could be beneficial for individuals at high risk of suicide.