“…Therefore, more research is needed on mechanisms of change in CT (Sexton et al, 2013) applying frequently collected data throughout the treatment, addressing progress as well as process. This has been done in the current study that builds on our previous research on CT in Norway: Three studies found that CT was associated with improvement ( d = 0.67—Tilden et al, 2010; d = 0.34—Tilden, Theisen, et al, 2020; and d = 0.43 and 0.48—Tilden, Wampold, et al, 2020), which is in line with meta‐analyses in our field ( d = 0.65—Carr et al, 2020; Roddy et al, 2020; Shadish & Baldwin, 2003). The current study builds on data from a randomized clinical trial (RCT) comparing two treatment conditions (Tilden, Wampold, et al, 2020), one with the use of frequent client‐rated feedback to the therapists throughout the treatment (routine outcome monitoring—ROM) and one with no use of systematic feedback (treatment as usual—TAU).…”