Introduction to the special section: toward a dimensionally based taxonomy of psychopathology.

Much current psychopathology research is framed by categorical constructs. Limitations of categorical constructs have been articulated, and dimensional constructs are often proposed as viable alternatives to categories of psychopathology. The purpose of this Special Section is to articulate and discuss diverse issues that arise in contemplating dimensional constructs as targets for psychopathology research. Copyright (c) 2005 APA, all rights reserved.