This paper investigates treatment for anger and aggression using a variety of methods. Assessments include direct observation, self-recording of frequency of aggressive incidents, self-recording of feelings of aggression, provocation role-plays, and provocation inventories. Treatment approaches include two forms of relaxation (BRT and APR), discussions and exercises on the understanding of emotion, role-plays to develop skills for dealing with feelings of anger, and exercises in the way in which individuals construe various situations. Three participants illustrate how these assessment and treatment methods can be used to tailor treatment to suit the particular problems displayed by individuals. The reasons for choosing particular methods are discussed as are the ways in which individuals respond to the programmes of therapy.