TY - JOUR T1 - Therapist effects and moderators of effectiveness and efficiency in psychological wellbeing practitioners: A multilevel modelling analysis JO - Behaviour Research and Therapy UR - http://eprints.whiterose.ac.uk/91873/ PY - 2015/06/01 AU - Firth N AU - Barkham M AU - Kellett S AU - Saxon D ED - DO - DOI: 10.1016/j.brat.2015.04.001 PB - Elsevier BV VL - 69 SP - 54 EP - 62 Y2 - 2024/12/22 ER -