<p>This thesis aims to explore the factors associated with attrition and completion for a New Zealand based community situated family violence intervention programme. It takes a mixed methods approach across two studies. Study one quantitatively investigated the attrition rate of the programme, and factors that predict this attrition. It used survival analysis techniques to analyse data files collected during the assessment phase of the programme. An attrition rate of 46% was identified, which is slightly higher than the average rate of attrition across family violence prevention programmes internationally. Ethnicity was the only variable found to predict attrition. Study two qualitatively explored the experiences of men who completed the intervention programme. Men were interviewed to provide insights into the facilitators and barriers to programme completion. Thematic analysis identified three themes of overcoming barriers to engagement and attendance; motivating factors for engagement; and the importance of active participation in facilitating healing. Aspects of the programme that could be strengthened to improve the engagement and attendance of future participants are discussed alongside the wider implications for family violence prevention practice and policy.</p>