Self-management techniques have been shown to be less labour intensive than other intervention procedures and to produce changes in behaviour that endure. Autistic children have been successfully taught to use self-management techniques across a variety of settings. The present study used an AB design with a follow-up to assess whether self-monitoring could be successfully employed to reduce inappropriate questioning behaviour in a high-functioning autistic adolescent. Results show that self-monitoring was associated with a reduction in questioning behaviour and a qualitative change in the questions asked. These findings are discussed in relation to their possible implications for the successful integration of autistic children into the mainstream.