Individual psychological vulnerability factors related to the initiation or increase in alcohol use in early adolescence: a longitudinal study

Objective This longitudinal study aims to explore several individual psychological vulnerability factors that could predict the onset or escalation of alcohol use in early adolescents. Method A total of 792 adolescents participated in all stages of this study. Participants were divided into two groups based on their alcohol use patterns: no drinking group (ND) and light drinking group (LD). Cognitive, personality, and neuropsychological measures were assessed using questionnaires, and alcohol use was evaluated at baseline (T1). After two years, alcohol use was reassessed (T2) and participants were categorized into three groups: no drinking group (ND), light drinking group (LD), and heavy episodic drinking group (HED). Results Results indicated that low inhibition, high sensitivity to reward, high openness to experience, and high motor impulsivity were primary predictors of the transition from no alcohol use (T1) to alcohol use (T2), regardless of subsequent drinking trajectory (LD or HED). The transition from LD (T1) to HED (T2) was primarily predicted by low inhibition, high cognitive impulsivity, high sensitivity to reward, and sex. Conclusions This longitudinal study provides a novel approach to the study of HED initiation in adolescence. The findings expand our understanding of the risk of psychological factors associated with adolescent alcohol initiation, enabling clinicians to tailor primary and secondary prevention programs in schools and other relevant settings.