Professor Wertheim, Personal Chair in Psychology, is a registered psychologist with endorsements in Community Psychology and Clinical Psychology in the Department of Psychology and Counselling at La Trobe. She is a Fellow of the Australian Psychological Society (APS) and a Fellow of the APS College of Community Psychologists and APS College of Clinical Psychologists.
Professor Wertheim has conducted and facilitated many professional development programs in negotiation and conflict analysis. These activities have included working with the United Nations Institute for Training and Research (Geneva) since 1995 in Austria, Norway, and Africa facilitating and lecturing in programs for UN staff and diplomats on the topics of preventive diplomacy and peace making. She is past National Convenor, and has been on the national and state executive committees of Psychologists for Peace, an Interest Group of the Australian Psychological Society. Her research interest in conflict resolution involves examining the factors that lead to forgiveness and reconciliation after perceived wrongs committed by others. The role of mindfulness and its relationship to forgiveness has also been of interest. Professor Wertheim has also worked with education systems and schools to help them develop and implement cooperative conflict resolution approaches and to enhance relationships in their communities.
She contributes to undergraduate, honours and post-graduate programs and teaches in the areas of ethics and professional issues, and peace psychology. She also coordinates an undergraduate psychology field placement subject in partnership with the Victorian Department of Health and Human Services.
Professor Wertheim's clinical psychology interests include research in the area of body image and disordered eating. She has been actively evaluating prevention and early intervention programs for adolescent girls and women, including using internet technology. Her research has examined body image changes over the course of pregnancy and the post-partum period, as well as the effects of mothers' eating patterns and body image on their children. She has also conducted or supervised a variety of studies on topics including longitudinal predictors of disordered eating and examination of sociocultural influences, including social media, in disordered eating and body concerns.