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(p. 296) Stages of Change 

(p. 296) Stages of Change
(p. 296) Stages of Change

Paul Krebs

, John C. Norcross

, Joseph M. Nicholson

, and James O. Prochaska

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date: 08 August 2020

The transtheoretical model and the stages of change are often used to adapt treatment to the individual client. This chapter aims to review the stages of change and popular measures of change readiness in psychotherapy and to conduct a meta-analysis of the relation between readiness measures and psychotherapy outcomes. This chapter reports data from 76 studies, encompassing 25,917 patients. Moderate-sized effects (d =.41) were found for the association between stages and psychotherapy success. Outcomes were a function of pretreatment stage of change; that is, the farther a patient is along the stages, the better the treatment outcomes. The chapter concludes with limitations of the research, diversity considerations, and therapeutic practices for stage matching in psychotherapy specifically and behavioral health more generally.

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