Thomas Widiger, Professor of Psychology at the University of Kentucky and Associate Editor of the Annual Review of Clinical Psychology, talks to Anna Rascouët-Paz about his most recent article for the journal, co-authored with Allen Frances of Duke University. In it, they list the lessons learned in the making DSM-IV and warn the makers of the fifth edition of the DSM against potential pitfalls. In the podcast, Professor Widiger discusses this article as well as the five-factor model, a dimensional model of general personality structure that he believes should be a tool for the diagnosis of personality disorders.