title: A daily diary study of perceived social isolation, dietary restraint, and negative affect in binge eating.
abstract: Negative affect and dietary restraint are key predictors of binge eating, yet less is known about the impact of social factors on binge eating. The study sought to replicate and extend research on the relationships between negative affect, dietary restraint, perceived social isolation and binge eating using a daily diary methodology. College women (N = 54) completed measures of dietary restraint, negative affect, perceived social isolation, and binge eating daily for 14 days. Participants completed the measures nightly each day. A series of generalized estimating equations showed that dietary restraint was associated with less binge eating while controlling for negative affect and for perceived social isolation separately. Negative affect and perceived social isolation were associated with greater binge eating while controlling for restraint in separate analyses, but only perceived social isolation was significant when modeled simultaneously. All two-way interactions between negative affect, dietary restraint, and perceived social isolation predicting binge eating were nonsignificant. This study furthers our understanding of predictors of binge eating in a nonclinical sample. Specifically, these data suggest perceived social isolation, negative affect, and dietary restraint are important variables associated with binge eating in daily life and warrant further research.
authors.affiliation: Neuropsychiatric Research Institute, 120 South 8th Street, Fargo, ND 58103, USA; Old Dominion University, Department of Psychology, Norfolk, VA 23529, USA. Electronic address: tmason@nrifargo.com.
authors.forename: Tyler B
authors.initials: TB
authors.lastname: Mason
authors.affiliation: Old Dominion University, Department of Psychology, Norfolk, VA 23529, USA; Virginia Consortium Program in Clinical Psychology, 700 Park Avenue/MCAR-410, Norfolk State University, Norfolk, VA 23504, USA.
authors.forename: Kristin E
authors.initials: KE
authors.lastname: Heron
authors.affiliation: Old Dominion University, Department of Psychology, Norfolk, VA 23529, USA.
authors.forename: Abby L
authors.initials: AL
authors.lastname: Braitman
authors.affiliation: Old Dominion University, Department of Psychology, Norfolk, VA 23529, USA; Virginia Consortium Program in Clinical Psychology, 700 Park Avenue/MCAR-410, Norfolk State University, Norfolk, VA 23504, USA.
authors.forename: Robin J
authors.initials: RJ
authors.lastname: Lewis
mesh_terms: D000293:Adolescent; D000328:Adult; D056912:Binge-Eating Disorder / Q000523:psychology*; D015992:Body Mass Index; D031204:Caloric Restriction / Q000523:psychology*; D003430:Cross-Sectional Studies; D015930:Diet Records; D004038:Diet, Reducing / Q000523:psychology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D012934:Social Isolation / Q000523:psychology*; D055815:Young Adult
keywords: Binge eating; Loneliness; Negative affect; Perceived social isolation; Restraint