Are life positions in transactional analysis accurate aides in diagnosing personality disorders? Eric Berne developed the notion of transactional analysis (TA ) and author of the book  "The Games People Play".

Thomas A Harris then wrote the book "I'm OK - You're Ok" based on Berne's theory of TA.

Tony White expanded on this theory.

They produced the following concepts about people's life positions. As a basis for a person's way of relating to others and the world.:  

"I'm OK, You're OK"
"I'm not OK, You're OK"
"I'm OK, You're not OK"
"I'm not OK, You're not OK"
"I'm not OK, But You're Worse"
"I'm not OK, You're Irrelevant"
"I'm a Bit More OK Than You Are"
"I'm OK, You're Irrelevant"
"I'm OK, You're OK, They're not OK"

How effective is this paradigm as an aide  to diagnosing personality disorders?
Personality disorders are diagnosed with the DSM manual save for a few which have targeted assessment tools (like the PCL-R). 

TA is not considered a well supported technique research wise and lots of schools don't teach it except by way of a history lesson. I'm quite certain that both Berne and the authors of the DSM would agree that it doesn't actually map onto any specific personality disorders currently recognized. At best there would be a relationship between many of the addictions and related dependencies but they're certainly not seen the same way.