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Assessment
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What's this?

A Scenario-Based Dieting Self-Efficacy Scale

The DIET-SE

Christine Stich

McGill University, christine.stich{at}mcgill.ca

Bärbel Knäuper

McGill University

Ami Tint

McGill University

The article discusses a scenario-based dieting self-efficacy scale, the DIET-SE, developed from dieter's inventory of eating temptations (DIET). The DIET-SE consists of items that describe scenarios of eating temptations for a range of dieting situations, including high-caloric food temptations. Four studies assessed the psychometric properties of the 11-item DIET-SE. Exploratory factor analysis (N = 392) and confirmatory factors analysis (N = 124) revealed three internally consistent and reliable factors representing challenges to adhere to a diet (high-caloric food temptations [HCF], social and internal factors [SIF], negative emotional events [NEE]). Convergent validity is established with other measures of dieting self-efficacy, as well as measures of eating disinhibition, susceptibility to hunger, and weight loss competency. Criterion-related validity is provided through the assessment of goal adherence, and predictive validity is established for dieters' actual food intake (N = 68). The DIET-SE represents a short, reliable, and valid scenario-based measure of dieting self-efficacy.

Key Words: dieting self-efficacy • scenario-based assessment • psychometric properties • DIET-SE • situational dieting self-efficacy

This version was published on March 1, 2009

Assessment, Vol. 16, No. 1, 16-30 (2009)
DOI: 10.1177/1073191108322000
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