What can Personality Theory do for the hobby?
It's not certain, but everyone who has played games for long enough has at some point along the line experienced trouble at the games table. Just maybe a better understanding of the various types and goals and styles that exist would help things go more easily and avoid problems? At the same time, there are many games and many reviewers. Perhaps knowing about types can help in figuring out which games you will like and which reviewers work for you? Check out the bibliography to learn more about the theory, learn your own type and soon you can begin making it work for you.