Beck's Negative Triad

Ellis's ABC Model

Albert Ellis (1962) proposed an alternative cognitive account of emotional disturbance — including depression — through his ABC model, which formed the basis of Rational Emotive Behaviour Therapy (REBT). Ellis argued that psychological disorders such as depression do not arise directly from negative life events but from the irrational beliefs that people hold about those events. The ABC framework provides a precise account of how events, beliefs, and emotional consequences are related.

A — Activating Event

The activating event is the external trigger — a situation, experience, or event that prompts an emotional response. Examples include failing an examination, losing a job, experiencing a relationship breakdown, or being criticised. Crucially, Ellis argued that the activating event does not directly cause emotional distress. The same event can produce very different emotional consequences in different people, depending on their beliefs.

B — Beliefs

It is the individual's beliefs about the activating event that determine the emotional consequence. Ellis distinguished between two types of belief. Rational beliefs are flexible, realistic, and helpful — they acknowledge the negative nature of the event but keep it in proportion. A rational response to exam failure might be: "This is disappointing, but it does not define me and I can try again." Irrational beliefs are rigid, extreme, and unhelpful — they demand absolute standards of themselves, others, or the world, and catastrophise when those standards are not met.

Ellis identified several characteristic types of irrational belief. Musturbation involves inflexible demands phrased as absolute necessities: "I MUST succeed", "Others MUST treat me fairly", "The world MUST be comfortable." Awfulising involves treating negative events as catastrophic: "It is absolutely awful that I failed." Low frustration tolerance is the belief that one cannot bear discomfort: "I cannot stand feeling this way." Global evaluation is rating the self or others globally as worthless on the basis of a specific failure: "I failed, therefore I am a failure."

C — Consequences

The consequences are the emotional and behavioural outcomes produced by the beliefs. Rational beliefs in response to a negative event produce healthy negative emotions — sadness, concern, or disappointment — that are proportionate to the event and motivate adaptive coping. Irrational beliefs produce unhealthy negative emotions — clinical depression, anxiety, rage, or shame — that are disproportionate and maintain or worsen the person's situation.

D and E: The Treatment Extension

Ellis extended the ABC framework into a treatment model by adding two further stages. D — Dispute involves the therapist actively challenging the irrational belief, using logical, empirical, and pragmatic arguments: "Where is the evidence that you MUST succeed?", "Is it truly awful, or merely very unfortunate?", "Does failing an exam make you a worthless person?" Successful disputation leads to E — Effect: the replacement of the irrational belief with a more rational, flexible one, producing a shift from unhealthy to healthy emotional consequences.

Evaluation

Ellis's model is parsimonious and has clear treatment utility — REBT has evidence of effectiveness in reducing symptoms of depression and anxiety. The ABC framework is intuitive and gives clients a concrete tool for self-monitoring their beliefs and responses. However, Ellis's concept of irrational beliefs has been criticised as culturally relative — what counts as 'irrational' may vary across cultures, and some demands (e.g. "I must be treated with respect") may be entirely reasonable in context. The model also implies that emotional distress is always the result of irrational thinking, which may minimise the role of genuinely adverse circumstances and biological factors in depression.