Transactional Analysis (TA) was developed by Eric Berne (born May 10, 1910, Montreal; died 1970; UCSF Eric L. Berne papers) in the late 1950s. It describes personality in terms of three ego states and analyzes the exchanges, or transactions, between people. Key books: Transactional Analysis in Psychotherapy (1961) and Games People Play (1964).

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Vocabulary & evolution of terms