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12-05-2015 | Original Article

A Feeling You Can’t Let Go: Temporal Stability and Vulnerability to Thought–Shape Fusion in Eating Disorders

Auteurs: Catherine Ouellet-Courtois, Jennifer S. Coelho, Adam S. Radomsky, Mimi Israël, Howard Steiger

Gepubliceerd in: Cognitive Therapy and Research | Uitgave 5/2015

Abstract

Thought–shape fusion (TSF) is a belief that entails perceptions of weight gain, moral transgression, and body dissatisfaction when thinking about food consumption. The objectives of the current study were to (1) investigate whether high TSF endorsement is associated with differences in cognitive, affective and behavioural reactions to a TSF induction in comparison to those who are low in TSF, and (2) evaluate whether TSF shows temporal stability. TSF was assessed in 32 individuals with eating disorders over a 1-month period. Participants were classified as either low (n = 16) or high (n = 16) in trait TSF. Participants attended three sessions (baseline, experimental session, and follow-up), and were exposed to a TSF induction during the experimental session. High correlations were found for trait TSF scores between baseline and follow-up appointments. Furthermore, high TSF individuals were more vulnerable to the induction, with higher negative affect and state TSF, and more food-related thoughts at follow-up in comparison to those low in TSF. These findings indicate that TSF is a stable belief holding clinical relevance.

vorige artikel Child Anxiety and the Processing of Ambiguity

volgende artikel The Role of Anxiety Sensitivity in the Relation Between Experiential Avoidance and Anxious Arousal, Depressive, and Suicidal Symptoms Among Latinos in Primary Care

Participants were also randomly assigned to a psychoeducation manipulation, as part of a separate research question, such that half of the participants heard a brief message about intrusive thoughts prior to receiving the TSF induction, while the other half heard a brief neutral message about dreams. Statistical analyses revealed no trends or significant effects of this manipulation on any of the primary dependent measures (i.e., state or trait TSF, TAF, or negative affect; all F’s < 1). Therefore, data presented are collapsed across the manipulation conditions.

Given the limited sample size in the current study, we applied the recommendations set forth by Christo et al. (2003), to examine the score at the 90th percentile of a normative sample as a proposed technique to identify a clinical cut-off. We reviewed the data available a sample of 283 individuals with no reported history of an eating disorder, based on a previously published sample (see Coelho et al. 2013 for details). The median split score obtained in the current study (i.e., 27) matched the suggested cut-off score associated with the 90th percentile score in a normative sample. The mean trait TSF score for the normative sample was 10.70 (SD = 10.70), with a score of 27 at the 90th percentile.

This analysis only includes 31 participants, as one participant failed to complete the follow-up assessment.

Two participants had much longer follow-up lags (63 and 65 days), relative to the mean follow-up of around 27 days. However, exclusion of these cases did not change the pattern of results—they were therefore retained in the analyses.

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Titel: A Feeling You Can’t Let Go: Temporal Stability and Vulnerability to Thought–Shape Fusion in Eating Disorders
Auteurs: Catherine Ouellet-Courtois
Jennifer S. Coelho
Adam S. Radomsky
Mimi Israël
Howard Steiger
Publicatiedatum: 12-05-2015
Uitgeverij: Springer US
Gepubliceerd in: Cognitive Therapy and Research / Uitgave 5/2015
Print ISSN: 0147-5916
Elektronisch ISSN: 1573-2819
DOI: https://doi.org/10.1007/s10608-015-9691-7

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