Cognitive Flexibility and Impulsivity Deficits in Suicidal Adolescents

Area of Science:

• Neuroscience
• Psychiatry
• Developmental Psychology

Background:

• Adolescent suicidal ideation (SI) and suicide attempts (SA) are linked to neurocognitive deficits.
• Distinguishing specific cognitive impairments between SI and SA groups is crucial for risk assessment.

Purpose of the Study:

• To investigate differences in impulsivity and cognitive control dimensions between adolescents with SA, SI, and typically developing controls (TDCs).
• To identify neurocognitive markers that differentiate SA from SI.

Main Methods:

• Cross-sectional study involving 141 adolescents (SA, SI, TDCs).
• Neurocognitive assessment using the Cambridge Neuropsychological Testing Automated Battery (CANTAB).
• Statistical analyses including ANOVAs and ANCOVAs.

Main Results:

• Adolescents with SA showed reduced set shifting/cognitive flexibility and greater impulsive decision-making compared to TDCs.
• TDCs and adolescents with SA demonstrated greater response inhibition than those with SI.
• No significant differences were found for spatial planning or visuospatial working memory.

Conclusions:

• Specific deficits in cognitive flexibility and decision-making may characterize adolescents with SA.
• Enhanced response inhibition in SA and TDC groups compared to SI suggests distinct neurocognitive profiles.
• Findings support integrating neurocognitive tasks into risk assessments and cognitive remediation for at-risk adolescents.