Maternal Psychopathology and Family Functioning as Predictors of Externalizing Behavior in Adolescents: A Cross-Sectional Study in Greece

Adolescent externalizing problems are commonly linked to maternal psychological distress and family functioning, but these associations remain underexplored in the Greek sociocultural context. This study examined how maternal symptoms of depression, anxiety, and stress, along with adolescent-perceived family functioning, predict externalizing behaviors in Greek adolescents. A total of 563 adolescent–mother dyads (63.4% girls; M_age = 15.03 and SD = 0.83) participated. Mothers completed the Child Behavior Checklist (CBCL), the Depression Anxiety Stress Scales (DASS-21), and the Family Assessment Device (FAD–GF), while adolescents completed the Youth Self-Report (YSR) and FAD–GF. Hierarchical regression analysis showed that adolescent-perceived family functioning was the strongest predictor of externalizing behavior (β = 0.24 and p < 0.001), even after accounting for demographic and maternal mental health variables. The final model explained 18% of the variance in adolescent externalizing problems. Mediation analysis confirmed that family functioning partially mediated the relationship between maternal depression and adolescent externalizing problems, with a significant indirect effect (a × b = 0.088, Sobel z = 2.90, and p = 0.004). Gender differences were found for self-reported aggressive behavior (t = −2.40, p = 0.017, and d = 0.20), with girls scoring higher than boys. These findings highlight the indirect impact of maternal depression through family dynamics and underscore the importance of culturally sensitive, family-centered interventions to reduce adolescent externalizing problems.