The present study focuses on analyzing the relationship between the parental acceptance-rejection perceived by adolescents and emotional instability from the early stages of adolescence. Special attention will be paid to potential differences between mothers and fathers. A total of 1181 students, aged 11-17, took part in the study. We used the factor of emotional instability in the Big Five Questionnaire (BFQ-NA) and an affect scale (EA-H) to measure parental acceptance-rejection. The analyses performed show a clear association between emotional instability with maternal/paternal criticism and rejection. Specifically, maternal criticism and rejection in early adolescence and paternal criticism and rejection in middle adolescence were associated with emotional instability, confirming the association between children's and adolescents' emotional adjustment and family dynamics. This study makes interesting contributions to understanding paternal and maternal rejection during the different stages of adolescence. These differences should be incorporated into the research on parental influence and its role in the development of personality among adolescents.
Keywords: adolescence; emotional instability; parental affect; parental rejection.