Transactional analysis (TA) is a therapeutic approach developed by Eric Berne in the 1950's. It has its roots in psychoanalysis, but maintains a focus on social transactions to determine 'ego states' in order to better understand behavior. The Internation Transactional Analysis Association defines TA as a "theory of personality and a systematic psychotherapy for personal growth and personal change".
- Transactional Analysis Theory: The Basics carolsolomonphd.com archive.org
- TA 101 ta-psychotherapy.co.uk
- Transactional analysis presentation nhs.uk archive.org
TA-Tutor.com is brilliant and has a wealth of handouts about Transactional Analysis. Some of my favourite examples are given here: