Few clinical scientists would disagree that more research is needed on the underlying
mechanisms and processes of change in psychological therapies. In the dominant current …

We know that psychotherapy works, but the processes and mechanisms underlying
therapeutic change are still largely unknown. The study of mediators and moderators of …

Little is known about how psychological treatments work. Research on treatment-induced
mediators of change may be of help in identifying potential causal mechanisms through …

There has been enormous progress in psychotherapy research. This has culminated in
recognition of several treatments that have strong evidence in their behalf. Even so, after …

As the number of psychotherapies with demonstrated efficacy accumulates, an important
task is to identify principles and processes of change. This information can guide treatment …

Objective: There is a need for rigorous methods to study the mechanisms that lead to
individual-level change (ie, process-outcome research). We argue that panel data (ie …

Procedures for examining whether treatment effects on an outcome are mediated and/or
moderated have been well developed and are routinely applied. The mediation question …

Objective: Modeling cross-lagged effects in psychotherapy mechanisms of change studies is
complex and requires careful attention to model selection and interpretation. However, there …

There is considerable debate about which empirical research methods best advance clinical
outcomes in psychotherapy. The prevailing tendency has been to test treatment packages …

Despite a recent surge of interest in the mechanisms and processes of change during
psychotherapy, investigations to date have yielded lamentably few interpretable results. The …