The ABC-model is a model used in rational emotive therapy, a form of cognitive therapy developed by Albert Ellis. In the model, a client’s problems are placed within three categories, namely the activating events (A), the belief system (B) and the behavioural consequences (C).
Lehmann, P.; Simmons, C. (2009). Strengths-Based Batterer Intervention: A New Paradigm in Ending Family Violence. (p.138). New York: Springer.