This project addresses the need to deepen the understanding of psychosocial intervention regarding gender-based violence, a field historically dominated by judicial research with little focus on specialized psychological practice. It aims to complicate the understanding beyond the victim-perpetrator dichotomy by analyzing conceptions and practices involving aggressors, and evaluating the training of psychologists in this area. A gap is identified in addressing aggressors and studying sexual harassment, particularly in the university setting. The methodology combines quantitative research to measure the prevalence of sexual harassment in HEIs (with a preliminary 30% reported) and applied/qualitative research, incorporating participatory action-research principles, to understand the needs of professionals assisting victims and to operationalize the new law against violence against women. The ultimate goal is to provide academic findings that inform professional practice and the design of public prevention policies.<br/><br/><b>Goal</b>: <br/>To contribute to a more complex understanding of gender-based violence in psychosocial intervention, analyzing its main dilemmas and challenges for professional training in psychology, and to assess the prevalence of sexual harassment in Higher Education Institutions (HEIs).<br/><br/><b>Research lines</b>: <br/>Political, social and community psychology