Psychotherapy practice-based research's network: Understanding how and why a psychotherapy works

This article presents 1) the Psychotherapy Practice-Based Research's Network, 2) the principles on which it is constructed: to contribute to answer two key questions for the practices and research: "Why and How a psychotherapy works" and to adapt methodology to clinical reality and not the reverse, 3) its innovating methodology: intensive study of psychotherapies carried out under natural conditions, with follow-up of the chronology of changes and correlation of the outcomes with the process of psychotherapy, and 4) its organization (thematic poles, groups of peers, meetings of formations and experience feedbacks, collaboration between clinicians and researchers). (C) 2009 Elsevier Masson SAS. All rights reserved.