The cognitive model proposes that distorted or dysfunctional thinking (which influences the patient's mood and behavior) is common to all psychological disturbances.

Psychologists
Aaron Beck
American psychiatrist (1921-2021) at the University of Pennsylvania who founded cognitive therapy and is widely regarded as the father of cognitive behavioral therapy (CBT). Trained originally as a psychoanalyst, Beck broke with Freudian orthodoxy in 1961 after his own systematic studies of depression contradicted the inverted-anger hypothesis. He formulated the cognitive triad of automatic thoughts about self, world and future, developed the Beck Depression Inventory in 1961 and more than a dozen further measurement scales, and in 1994 co-founded the Beck Institute with his daughter Judith. Named one of the five most influential psychotherapists of all time in 1989, he authored 25 books and over 600 articles before dying at home aged 100.
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Aaron Beck's Other Quotes
The thoughts or cognitions occur automatically, and may be regarded as the patient's automatic interpretations of his experiences.
There is more to the surface than meets the eye.
Hostility, anger, and rage are best understood as derivatives of an underlying perception of threat or transgression.
If your thinking is bogged down by distorted symbolic meanings, illogical reasoning, and erroneous interpretations, you are, in truth, blind and deaf.
Related Quotes
Learned helplessness is the giving-up reaction, the quitting response that follows from the belief that whatever you do doesn't matter.
-- Martin Seligman
Losses loom larger than gains.
-- Daniel Kahneman
The best years of your life are the ones in which you decide your problems are your own. You do not blame them on your mother, the ecology, or the president. You realize that you control your own destiny.
-- Albert Ellis
You largely constructed your depression. It wasn't given to you. Therefore, you can deconstruct it.
-- Albert Ellis
I always felt that a scientist owes the world only one thing, and that is the truth as he sees it. If the truth contradicts deeply held beliefs, that is too bad. Tact and diplomacy are fine in international relations, in politics, perhaps even in business; in science only one thing matters, and that is the facts.
-- Hans Eysenck
The mere awareness of the presence of an out-group is sufficient to provoke intergroup competitive or discriminatory responses on the part of the in-group.
-- Henri Tajfel