title: Incompleteness, aesthetic sensitivity, and the obsessive-compulsive need for symmetry.
abstract: OBJECTIVE
  The "need for symmetry" is a well recognized yet little understood feature of obsessive-compulsive (OC) experience. In light of the strong associations between the OC-related trait of incompleteness and symmetry-related behaviors and symptoms, and between perceptual symmetry and aesthetic judgments, this study examined whether trait incompleteness is associated with enhanced natural aesthetic skill and/or aesthetic sensitivity, particularly as they pertain to visual symmetry.
  
  
  METHODS
  A quasi-experimental design was used to compare the responses of nonclinical individuals with high versus average levels of trait incompleteness on self-report measures and two performance measures of aesthetic judgment.
  
  
  RESULTS
  Compared to controls, participants high in incompleteness reported higher levels of self-perceived symmetry-related concerns and behaviors, and displayed greater aesthetic sensitivity in the form of substantially heightened preferences for symmetry in images. Contrary to the hypothesis relating to aesthetic skill, however, the two groups did not differ in their capacity to estimate accurately the objective aesthetic value of images. Nor did they differ in self-reported aesthetics interests and background.
  
  
  CONCLUSIONS
  A clinical sample was not included.
  
  
  CONCLUSIONS
  Findings provide evidence that high trait incompleteness is associated not just with symptomatic symmetry-related concerns but with a nonspecific heightened preference for visual symmetry. Conceptual implications are discussed, particularly the potential value of the perceptual fluency theory of symmetry and aesthetic response for explaining the association between incompleteness and symmetry preferences and symptoms.
authors.affiliation: Department of Psychology, Trent University, Canada. Electronic address: lsummerfeldt@trentu.ca.
authors.forename: Laura J
authors.initials: LJ
authors.lastname: Summerfeldt
authors.affiliation: Department of Psychology, University of Guelph, Ontario, Canada.
authors.forename: Shaun J
authors.initials: SJ
authors.lastname: Gilbert
authors.affiliation: Department of Psychology, Trent University, Canada.
authors.forename: Michael
authors.initials: M
authors.lastname: Reynolds
mesh_terms: D000293:Adolescent; D004644:Emotions / Q000502:physiology*; D004954:Esthetics; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008297:Male; D016743:Mental Competency / Q000523:psychology*; D019964:Mood Disorders / Q000175:diagnosis / Q000523:psychology; D009771:Obsessive-Compulsive Disorder / Q000523:psychology*; D010555:Personality Inventory; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012649:Self Concept; D057566:Self Report; D055815:Young Adult
keywords: Aesthetic; Incompleteness; Obsessive-compulsive; Symmetry