Yichelle Y Zhang1, Bruce D Burns2, Stephen Touyz1. 1. School of Psychology, The University of Sydney, Sydney, NSW, 2006, Australia. 2. School of Psychology, The University of Sydney, Sydney, NSW, 2006, Australia. bruce.burns@sydney.edu.au.
Abstract
BACKGROUND: Feelings of fat are common for people with eating disorders, but ways of measuring its intensity are needed. Therefore, our goal was to develop a self-report feelings of fat scale that asked participants to indicate how intensely they currently felt statements such as "I feel fat". With such a scale we can determine how strongly feelings of fat relate to evidence of disordered eating. METHODS: We conducted three studies of eating disorders with undergraduate women taking introductory psychology classes. The combined sample was 472 participants. A previous eating disorder diagnosis was self-reported by 33 participants and a current diagnosis by 11. All participants completed the EDE-Q and the seven (Study 1) or nine item (Studies 2 and 3) "State Feelings of Fat" (SFF) scales we developed. Each item asked them to rate the intensity with which they felt statements such "I feel fat" on a seven-point scale from "not at all" to "the most I have ever felt". RESULTS: Both the seven and nine item SFF scales were highly coherent (Cronbach's α were .94, .95 and .94), but factor analysis supported the seven-item version. We found high correlations between SFF and EDE-Q scores (Study 1: .816; Study 2: .808; Study 3: .841). SFF scores distinguished participants self-reporting no eating disorder diagnosis from those with a former diagnosis, t (361) = 2.33, p = .021, who in turn were distinguished from those with a current diagnosis, t (42) = 2.09, p = .043. Due to the high coherence of the scale, the single item "I feel fat" captured most of the variance in EDE-Q scores (r [472] = .793). CONCLUSIONS: We have constructed an eating disorders relevant feelings of fat scale. Given that the EDE-Q is considered a valid questionnaire for measuring severity of eating disorders, our findings suggests that feelings of fat are core to the psychopathology of eating disorders. To the extent that EDE-Q scores are stable it also suggests that feelings of fat are surprisingly stable. Furthermore, the single item "I feel fat" alone may capture most of what the EDE-Q measures.
BACKGROUND: Feelings of fat are common for people with eating disorders, but ways of measuring its intensity are needed. Therefore, our goal was to develop a self-report feelings of fat scale that asked participants to indicate how intensely they currently felt statements such as "I feel fat". With such a scale we can determine how strongly feelings of fat relate to evidence of disordered eating. METHODS: We conducted three studies of eating disorders with undergraduate women taking introductory psychology classes. The combined sample was 472 participants. A previous eating disorder diagnosis was self-reported by 33 participants and a current diagnosis by 11. All participants completed the EDE-Q and the seven (Study 1) or nine item (Studies 2 and 3) "State Feelings of Fat" (SFF) scales we developed. Each item asked them to rate the intensity with which they felt statements such "I feel fat" on a seven-point scale from "not at all" to "the most I have ever felt". RESULTS: Both the seven and nine item SFF scales were highly coherent (Cronbach's α were .94, .95 and .94), but factor analysis supported the seven-item version. We found high correlations between SFF and EDE-Q scores (Study 1: .816; Study 2: .808; Study 3: .841). SFF scores distinguished participants self-reporting no eating disorder diagnosis from those with a former diagnosis, t (361) = 2.33, p = .021, who in turn were distinguished from those with a current diagnosis, t (42) = 2.09, p = .043. Due to the high coherence of the scale, the single item "I feel fat" captured most of the variance in EDE-Q scores (r [472] = .793). CONCLUSIONS: We have constructed an eating disorders relevant feelings of fat scale. Given that the EDE-Q is considered a valid questionnaire for measuring severity of eating disorders, our findings suggests that feelings of fat are core to the psychopathology of eating disorders. To the extent that EDE-Q scores are stable it also suggests that feelings of fat are surprisingly stable. Furthermore, the single item "I feel fat" alone may capture most of what the EDE-Q measures.
Entities:
Keywords:
EDE-Q; Eating disorders; Feelings of fat; Scale development
Authors: Walid El Ansari; Susanne Vodder Clausen; Andi Mabhala; Christiane Stock Journal: Int J Environ Res Public Health Date: 2010-02-21 Impact factor: 3.390
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