An apology for research integration in the study of psychotherapy.

Criticisms of the integration of psychotherapy-outcome research performed by M. L. Smith et al (1980) are reviewed and answered. An attempt is made to account for the conflicting points of view in this disagreement in terms of certain issues that have engaged philosophers of science in the 20th century: the quality of the study, uniformity, and the incommensurability problem. (35 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)