Dr. Taibi Kahler
A clinical psychologist who, in the 1970s, researched Transactional Analysis and identified predictable distress behavior patterns.
NASA
In the early 1980s NASA drew on Kahler''s work in the context of astronaut selection. [Wording to verify against official sources – no current NASA endorsement is implied]
From profile to communication
The research led to the Personality Pattern Inventory and Process Communication Model®, which spread to dozens of countries.