Dr. Carmen Lefevre writes," Gaining a clear understanding of a behaviour as well as its drivers and barriers is pivotal for successfully changing it. In the context of dysfluency, there are likely many different factors that influence the target behaviour (e.g. ‘speaking fluently’) and that need to each be understood and considered in the context of all other factors. Behavioural science provides methods for understanding behaviours and their influences, and for developing interventions that are most likely to be effective in their contexts. This talk will outline evidence-based principles of behaviour change and introduce a systematic method for designing interventions to change behaviour. This involves defining a clear target behaviour, conducting a behavioural analysis to identify the facilitators and barriers of the target behaviour, and identifying the most suitable behaviour change techniques for the context. The talk will illustrate how these principles and methods can be applied to a behaviour like stuttering using examples from previous work."