The ABC Model

The ABC model is a foundational framework in CBT, developed by Albert Ellis as part of Rational Emotive Behaviour Therapy (REBT) and later absorbed into broader CBT practice.

The letters stand for: Activating event, Beliefs, and Consequences.

The model challenges the common assumption that events directly cause our emotional reactions — that something happens to us and we feel bad because of it. Instead, it proposes that it's our beliefs about the event — the meaning we assign to it, the story we tell ourselves — that determine how we feel and behave. The activating event is just the trigger; the belief is the engine.

The practical power of the model lies in what it implies: if your beliefs are the link between events and your emotional consequences, then changing those beliefs changes how you feel. For example, the activating event might be a friend not replying to your message. One person's belief — "they're probably busy" — leads to a consequence of mild indifference. Another person's belief — "they're ignoring me because I'm annoying" — leads to anxiety and withdrawal. Same event, completely different emotional outcomes.

CBT uses the ABC model as a starting point for identifying and then challenging the distorted or unhelpful beliefs sitting in the middle, replacing them with more balanced, evidence-based thinking — and by doing so, shifting the emotional and behavioural consequences downstream.