Diagnostic and Statistical Manual of Mental Disorders DSM-IV-TR Fourth Edition

American Psychiatric Association (Corporate Author)

The diagnostic sections remain largely unchanged. Only significant changes were to the text portion, hence the TR designation-- text revised. This is important if you are a student or in a research position.

They produced this version in response to the fact that many graduate programs are using the DSM as a text book in their Pathology courses. In this regard, the new version is worthwhile and clearly justified.

It also buys them a little more time in development of the DSM V. For clinical purposes, don't bother, it's not worth the money. If you are getting your first copy, or are looking for class, then you want this edition.

Sources : Amazon