Exploring Criterion Confounding in the Measurement of Binge Eating Symptoms and Negative Affect |
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Authors: | Erin T Barker Nancy L Galambos |
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Institution: | (1) Department of Psychology, University of Alberta, Edmonton, AB, Canada;(2) Waisman Center, University of Wisconsin-Madison, 1500 Highland Ave., Madison, WI 53705, USA |
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Abstract: | Common measures of eating disorder symptoms contain affect-related items. When associations between negative affect and eating
disorder symptoms are examined, criterion confounding is possible. The current study explored whether criterion confounding
biases estimates of relations between symptoms of binge eating and negative affect. Data were collected from first-year university
student women via 14-day web-based daily diaries. The Minnesota Eating Behavior Survey (MEBS) measured daily symptoms of binge
eating, and the Positive and Negative Affect Schedule (PANAS) measured daily negative affect. The inclusion of affect-related
items in the MEBS biased mean level tests of negative affect, correlations of negative affect with symptoms of binge eating,
and associations between the likelihood of reporting behavioral symptoms of binge eating and same-day negative affect. Converging
results demonstrated the need to measure associated features and risk factors separately from problematic eating behavior
symptoms.
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Keywords: | Eating disorders Binge eating Negative affect Criterion confounding |
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