Cognitive theory of depression

The most-reported failure: writing about negative thinking without naming a cognitive theory or its parts, though either Beck or Ellis is creditworthy. Weak: she thinks negatively, so she is depressed. Strong: Beck's negative triad — negative views of self, world and future, each feeding the others. Fix it by naming a term: triad, schema, ABC model, irrational belief.

In Ellis's model A does not produce C on its own — the belief at B does. Writing the event caused her depression states the view Ellis argued against. Correct shape: the event was X, the irrational belief was Y, and the belief produced the depression at C. Two people can share an event yet reach opposite consequences — which only works if B, not A, drives it.

Statement 3.1.5 ends including strengths and weaknesses, so evaluation is guaranteed. Identification stops at the label: one weakness is that it is reductionist. Explanation carries it through — reductionist because it explains depression by thinking alone, leaving out biology and adversity, so it cannot alone say why depression runs in families. Use point, because, so what.

The triad is not three separate gloomy views. Its power is that each maintains the other two: a negative view of the self makes failure look inevitable, confirming a hopeless view of the future, which stops the person acting. Naming the three parts without the loop describes the triad but does not explain why depression continues. Draw it as a triangle, not a list.

A rational belief is a preference that can be disappointed (I would have liked to be chosen); an irrational belief is an absolute demand that can only be violated (I must succeed at everything). The error is treating any upsetting thought as irrational. What makes a belief irrational in Ellis's sense is its rigidity — a must, should or have-to — not how unpleasant it is.

The negative triad is Beck's; the ABC model is Ellis's — two versions of the cognitive explanation, not one theory. An answer that fuses them, an ABC model with a triad at B, muddles both. Give either Beck's schema, biases and triad, or Ellis's event, belief and consequence, and keep them apart. Whichever you pick is accepted, but the parts must belong to that version.

Two linked errors. One: it does not blame the person — the thoughts are automatic, not choices, though it can understate real adversity, so it explains maintenance better than onset. Two: reductionism is explaining by the simplest parts — depression reduced to thought; a testable strength, not an insult, so the theory is incomplete, not wrong. It is nurture, not nature.