There are many ways to outline TA (Transactional Analysis). We would like to name just a few here, so that you can get an idea:
Transactional analysis is a social psychology developed by Eric Berne, MD (d.1970). Berne’s theory consists of certain key concepts that practitioners use to help clients, students, and systems analyze and change patterns of interaction that interfere with achieving life aspirations.
(Definition of ITAA, the International Transactional Analysis Association: https://www.itaaworld.org/what-transactional-analysis)
TA is a helpful tool to understand what happens in communication with people and their environment, where it comes from.
Applied TA supports people in finding access to their own life energy and personally shaping their everyday lives, both professionally and privately.
If you have any further questions, please contact me.