Davies, Lene, Leach, Chris, Lucock, Mike, Stiles, William, Iveson, Steve and Barkham, Michael (2006) Therapists' recall of early sudden gains in routine clinical practice. Psychology and Psychotherapy: Theory, Research and Practice, 79 (1). pp. 107-114. ISSN 1476-0835

This study followed up one by Stiles et al. (2003), which identified sudden gains – large reductions from one session to the next on a short form of clinical outcomes in routine evaluation outcome measure (CORE-SF) – by some clients in routine clinical practice. We interviewed the therapists who had treated sudden gain and non-sudden gain clients. Results showed that therapists could retrospectively identify which clients had or had not experienced sudden CORE-SF gains at substantially better than chance rates, although they identified only about half of the clients who had experienced such gains.