Gender-based Analysis Plus (GBA+) is an analytical process used to understand how diverse groups of women, men, and non-binary people experience policies, programs, and initiatives. Working with the Department for Women and Gender Equality, an Impact Canada Fellow leveraged behavioural insights to develop an approach to identify and understand culture and attitudes surrounding GBA+ in the public service, develop an approach to evaluating the efficacy of GBA+ training, and design interventions to improve the quality of GBA+ in policy and program development.