title: Using ecological momentary assessment to examine interpersonal and affective predictors of loss of control eating in adolescent girls.
abstract: OBJECTIVE
  Pediatric loss of control (LOC) eating is predictive of partial- and full-syndrome binge eating disorder. The interpersonal model proposes that LOC eating is used to cope with negative mood states resulting from interpersonal distress, possibly on a momentary level. We therefore examined temporal associations between interpersonal problems, negative affect, and LOC eating among overweight adolescent girls using ecological momentary assessment (EMA).
  
  
  METHODS
  Thirty overweight and obese (≥85th body mass index (BMI) percentile; BMI: M = 36.13, SD = 7.49 kg/m(2)) adolescent females (Age: M = 14.92, SD = 1.54 y; 60.0% African American) who reported at least two LOC episodes in the past month completed self-report momentary ratings of interpersonal problems, state affect, and LOC eating for 2 weeks. A series of 2-level multilevel models with centering within subjects was conducted.
  
  
  RESULTS
  Between- and within-subjects interpersonal problems (p's < .05), but not between- (p = .12) or within- (p = .32) subjects negative affect predicted momentary LOC eating. At the between-subjects level, interpersonal problems significantly predicted increases in negative affect (p < 001).
  
  
  CONCLUSIONS
  Naturalistic data lend support to the predictive value of interpersonal problems for LOC eating among adolescents. Interventions targeting interpersonal factors on a momentary basis may be useful during this developmental stage.
authors.affiliation: Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences (USUHS), DoD, 4301 Jones Bridge Road, Bethesda, Maryland.
authors.forename: Lisa M
authors.initials: LM
authors.lastname: Ranzenhofer
authors.forename: Scott G
authors.initials: SG
authors.lastname: Engel
authors.forename: Ross D
authors.initials: RD
authors.lastname: Crosby
authors.forename: Micheline
authors.initials: M
authors.lastname: Anderson
authors.forename: Anna
authors.initials: A
authors.lastname: Vannucci
authors.forename: L Adelyn
authors.initials: LA
authors.lastname: Cohen
authors.forename: Omni
authors.initials: O
authors.lastname: Cassidy
authors.forename: Marian
authors.initials: M
authors.lastname: Tanofsky-Kraff
mesh_terms: D000223:Adaptation, Psychological / Q000502:physiology; D000293:Adolescent; D000339:Affect / Q000502:physiology; D056912:Binge-Eating Disorder / Q000523:psychology*; D001823:Body Composition / Q000502:physiology; D015992:Body Mass Index; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D006801:Humans; D007398:Interpersonal Relations; D050177:Overweight / Q000523:psychology*; D010808:Physical Examination
keywords: adolescents; eating disorders; interpersonal model; loss of control eating binge eating; negative affect