abstract
Article history:
Received 19 October 2011
Revised 12 June 2012
Accepted 25 June 2012
Available online 3 July 2012
Keywords:
Eating disorders
Motivation
Stages of change
Transtheoretical model
Motivational interviewing
Research in eating disorders is reviewed examining the (1) utility of the Transtheoretical Model in predicting
outcome, and (2) efficacy of Motivational Interviewing (MI). There were promising results showing significant
relationships between initial stage of change and treatment outcome related to eating pathology (not including
purging), body mass index, and some aspects of psychopathology. Of those treatment studies utilising a control
group, there was little indication that using MI conferred significant treatment benefit, with the exception of im-
proving motivation and binge eating for people with binge eating disorder and bulimia nervosa. Overall the con-
tent of the studies varied greatly with relation to: stage of change and outcome measures, format of MI, diagnostic
groupings, age of participants, utilisation of other adjunctive treatments, sample size, presence of follow-up assess-
ments, and study design. Few of the 9 studies examining the efficacy of MI could be considered to have robust
methodology. It is recommended that future research using the Transtheoretical Model to predict outcome adopt
more uniform methodology so that we can more specifically determine its applicability, and that well-designed
treatment studies in eating disorder populations be conducted so that we develop a stronger evidence base from
which to decide whether MI confers benefit.
abstractArticle history:Received 19 October 2011Revised 12 June 2012Accepted 25 June 2012Available online 3 July 2012Keywords:Eating disordersMotivationStages of changeTranstheoretical modelMotivational interviewingResearch in eating disorders is reviewed examining the (1) utility of the Transtheoretical Model in predictingoutcome, and (2) efficacy of Motivational Interviewing (MI). There were promising results showing significantrelationships between initial stage of change and treatment outcome related to eating pathology (not includingpurging), body mass index, and some aspects of psychopathology. Of those treatment studies utilising a controlgroup, there was little indication that using MI conferred significant treatment benefit, with the exception of im-proving motivation and binge eating for people with binge eating disorder and bulimia nervosa. Overall the con-tent of the studies varied greatly with relation to: stage of change and outcome measures, format of MI, diagnosticgroupings, age of participants, utilisation of other adjunctive treatments, sample size, presence of follow-up assess-ments, and study design. Few of the 9 studies examining the efficacy of MI could be considered to have robustmethodology. It is recommended that future research using the Transtheoretical Model to predict outcome adoptmore uniform methodology so that we can more specifically determine its applicability, and that well-designedtreatment studies in eating disorder populations be conducted so that we develop a stronger evidence base fromwhich to decide whether MI confers benefit.
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