title: Assessing unrealistic optimism: impact of different approaches to measuring susceptibility to diabetes.
abstract: The effects of measurement method on levels of unrealistic optimism for developing diabetes were examined in 323 UK adults. A mixed factorial design comprised direct and indirect measures of unrealistic optimism as the within-subjects variable, and between-subjects manipulations of the order of direct versus indirect assessment, the order of self-other comparison, the number of response options used and the polarity of the ratings. More unrealistic optimism was obtained using the direct method and using unipolar scales, and/or with the self-other order in the indirect method. The results indicate that levels of unrealistic optimism depend on its assessment method.
authors.affiliation: Department of Psychology, Trinity College, Dublin, Ireland. heveydt@tcd.ie
authors.forename: David
authors.initials: D
authors.lastname: Hevey
authors.forename: David P
authors.initials: DP
authors.lastname: French
authors.forename: Theresa M
authors.initials: TM
authors.lastname: Marteau
authors.forename: Stephen
authors.initials: S
authors.lastname: Sutton
mesh_terms: D001294:Attitude to Health; D003920:Diabetes Mellitus / Q000209:etiology*; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D018570:Risk Assessment / Q000379:methods; D011795:Surveys and Questionnaires