Tycho,
Here are some links within this site that may better help you find what you are looking for. Good luck with the essay. Sounds like a unique perspective to take on Holden. Make sure to note your sources!! Teachers are wiser to Internet research these days
resource directory
disorders
Generalized Anxiety Disorder
Link to an outside site that has lots of dictionaries and glossaries
Psychology,Dictionary, Glossary, and Terms directory (at Glossarist)