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Beyond impulsivity, predicting non-suicidal self-injurious behavior in adolescents: A network approach
Baihui Luo1, Fang Nong2, Bing Qi2
1School of Physical Education and Health, Guangzhou City Construction College, Guangzhou, Guangdong 510925, China.
Journal of Affective Disorders
|July 22, 2025
Summary
Impulsivity directly predicts adolescent non-suicidal self-injury (NSSI). Interpersonal anxiety and physical symptoms indirectly influence NSSI by increasing impulsive tendencies.
Area of Science:
- Psychiatry
- Adolescent Psychology
- Mental Health Research
Background:
- Impulsivity is a known risk factor for adolescent non-suicidal self-injury (NSSI).
- The influence of other psychological factors on the impulsivity-NSSI relationship is not fully understood.
Purpose of the Study:
- To investigate the complex network of relationships between general mental health and NSSI in adolescents.
- To explore the interplay of impulsivity, interpersonal anxiety, physical symptoms, and NSSI.
Main Methods:
- Surveyed 1127 adolescents on NSSI, mental health, attitudes toward animals, and demographics.
- Employed logistic regression, GLASSO, and Bayesian network analyses to examine interactions.
Main Results:
- Impulsive tendencies (OR: 1.62) and physical symptoms (OR: 1.34) were significantly associated with NSSI.
- Network analysis revealed anxiety about people, physical symptoms, and impulsive tendencies as central features.
- Bayesian analysis indicated impulsive tendencies directly impact NSSI, while anxiety and physical symptoms have an indirect effect via impulsivity.
Conclusions:
- Impulsivity is a strong, direct predictor of NSSI in adolescents.
- Interpersonal anxiety and somatic symptoms indirectly contribute to NSSI by exacerbating impulsive tendencies.
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