(1) Background: Partner violence prevention programmes do not produce the expected behavioural changes. Accordingly, experts suggest applying evidence-based behavioural models to identify the determinants of abusive behaviours. In this research, we applied the reasoned action approach (RAA) to predict the performance (boys) and acceptance (girls) of abusive behaviours in adolescents. (2) Method: We designed a questionnaire based on the RAA and performed a cross-sectional study. We analysed the predictive capacity of the RAA constructs on intentions with the sample of single adolescents ( = 1112). We replicated the analysis only with those who were in a relationship ( = 587) and in addition analysed the predictive capacity of intention on future behaviour (3 months later). (3) Results: The hierarchical regression analysis performed with the sample of single adolescents showed that the model explained 56% and 47% of the variance of boys' intentions to perform the controlling and devaluing behaviours, respectively; and 62% and 33% of girls' intention to accept them. With those in a relationship, the model explained 60% and 53% of the variance of boys' intentions to perform the controlling and devaluating behaviour, respectively, and 70% and 38% of girls' intention to accept them. Intention exerted direct effects on boys' performance of controlling and devaluing behaviours (31% and 34% of explained variance, respectively) and on girls' acceptance (30% and 7%, respectively). (4) Conclusions: The RAA seems useful to identify the motivational determinants of abusive behaviours, regardless of adolescents´ relationship status, and for their prediction. Perceived social norms emerge as a relevant predictor on which to intervene to produce behavioural changes with both sexes.
