| Aaron T. Beck |
 Aaron T. Beck (born July 18, 1921) is an American psychiatrist who is professor emeritus in the department of psychiatry at the University of Pennsylvania. He is regarded as the father of cognitive therapy, and his pioneering theories are widely used in the treatment of clinical depression. Beck also developed self-report measures of depression and anxiety, notably the Beck Depression Inventory (BDI) which became one of the most widely used instruments for measuring depression severity. https://en.wikipedia.org/wiki/Aaron_T._Beck |
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