लेखक: Nancy Pistrang

Chris Barker is Professor of Clinical Psychology in the Department of Clinical, Educational and Health Psychology at UCL, UK, where he was formerly the joint Research Director on the Doctoral Program in Clinical Psychology. Nancy Pistrang is Professor of Clinical Psychology in the Department of Clinical, Educational and Health Psychology at UCL, UK, where she was formerly the joint Research Director on the Doctoral Program in Clinical Psychology. Robert Elliott is Professor of Counselling at the University of Strathclyde, UK, and Emeritus Professor of Psychology at the University of Toledo, USA. He is a former President of the Society for Psychotherapy Research and former co-editor of the journals Psychotherapy Research and Person-Centered Counselling and Psychotherapy.