title: A new ecologically valid method to assess body size estimation and body size dissatisfaction.
abstract: OBJECTIVE
  The primary aim of the present study was to develop an ecologically valid method for assessing the perception of body size (as opposed to the memory of body size).
  
  
  METHODS
  Women with clinical eating disorders (N = 14) and no eating disorder (N = 24) estimated their actual and desired body size while looking in a mirror. Estimations were made using projected images that were the same height as the participants' reflections in the mirror.
  
  
  RESULTS
  This new method assessed the perception of body size under conditions that resembled the real-life situation of viewing oneself in a mirror. Participants with eating disorders significantly overestimated their body size relative to controls (p <.05) and tended to be more dissatisfied with their body size (p =.07).
  
  
  CONCLUSIONS
  It is argued that the new method assesses the perception of body size, is ecologically valid, and is the most clinically relevant of the methods developed to date.
authors.affiliation: Oxford University, Department of Psychiatry, Oxford, England. roz.shafran@psych.ox.ac.uk
authors.forename: Roz
authors.initials: R
authors.lastname: Shafran
authors.forename: Christopher G
authors.initials: CG
authors.lastname: Fairburn
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001824:Body Constitution; D001828:Body Image; D015992:Body Mass Index; D016022:Case-Control Studies; D001068:Feeding and Eating Disorders / Q000175:diagnosis / Q000523:psychology*; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D010549:Personal Satisfaction; D012647:Self-Assessment; D011795:Surveys and Questionnaires