title: Behavioral assessment of unilateral neglect: study of the psychometric properties of the Catherine Bergego Scale.
abstract: OBJECTIVE
  To assess the psychometric properties of a scale for spatial neglect in everyday life.
  
  
  METHODS
  Validation study.
  
  
  METHODS
  A neurologic rehabilitation unit in a university hospital.
  
  
  METHODS
  Eighty-three consecutive right-hemisphere stroke patients.
  
  
  METHODS
  Not applicable.
  
  
  METHODS
  The Catherine Bergego Scale (CBS) was used to assess neglect behavior and anosognosia. Its sensitivity was compared with that of 3 conventional tests. The inner structure of the scale was studied by principal component analysis. In addition, linearity, unidimensionality, and reliability of the scale were tested through Rasch analysis.
  
  
  RESULTS
  Behavioral assessment correlated significantly to, but was more sensitive than, conventional tests. Anosognosia correlated significantly with neglect severity, although individual dissociations occurred. Factorial analysis disclosed a single underlying factor, explaining 65.8% of total variance. Rasch analysis also revealed that the 10 items defined a common, single ability continuum with widespread measurement range and quite regular item distribution, and showed a satisfactory reliability.
  
  
  CONCLUSIONS
  Behavioral assessment proved to be more sensitive than conventional paper and pencil tasks. Both conventional statistics and Rasch analysis suggest that the CBS is reliable and valid, and that the 10 items define a homogeneous construct.
authors.affiliation: Service de Rééducation Neurologique, Formation de Recherche Associée Claude Bernard, UFR Paris-Ouest, Hôpital Raymond Poincaré, Garches, France. philippe.azouvi@rpc.ap-hop-paris.fr
authors.forename: Philippe
authors.initials: P
authors.lastname: Azouvi
authors.forename: Sylvie
authors.initials: S
authors.lastname: Olivier
authors.forename: Godeleine
authors.initials: G
authors.lastname: de Montety
authors.forename: Christiane
authors.initials: C
authors.lastname: Samuel
authors.forename: Anne
authors.initials: A
authors.lastname: Louis-Dreyfus
authors.forename: Luigi
authors.initials: L
authors.lastname: Tesio
mesh_terms: D000328:Adult; D000368:Aged; D001364:Awareness; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D010468:Perceptual Disorders; D011594:Psychometrics; D013037:Spatial Behavior; D013647:Task Performance and Analysis