OBJECTIVE: To assess the psychometric properties of a Norwegian translation of the Barratt Impulsiveness Scale (BIS-11) for use in populations of @entity10 , @entity191 ( @entity191 ), and healthy controls. MATERIALS AND METHODS: The BIS-11 was forward and backward translated by native speakers of both Norwegian and English to give Norwegian BIS-11 (Nor-BIS-11). A convenience sample (110 subjects) of healthy controls (47), @entity191 @entity1 (43), and @entity2794 @entity1 (20) (the latter two recruited from a Neurology outpatient clinic), were asked to complete the scale (a subset twice for test-retest). Exploratory and confirmatory factor analyses were done for a single-factor model, the original three-factor model and a two-factor model. Test-retest results were analyzed using the Bland-Altman approach. RESULTS: The Nor-BIS-11 scale showed good utility and acceptability as well as good test-retest reliability in this sample. Cronbach's a was .68, test-retest bias was -0.73, Cohen's     =  -.134, and limits of agreement were -11.48 to 10.01. The factor structure was found to fit better with a two-factor model than with the original model with three factors. The model fit indices indicated a moderate fit. CONCLUSIONS: The Nor-BIS-11 scale is acceptable and reliable to use in @entity191 @entity1 , @entity2794 @entity1 , and healthy controls. The results should be interpreted in a two-factor model but with caution due to low construct validity. External validity needs to be further tested.

Psychometric properties of a Norwegian adaption of the Barratt Impulsiveness Scale-11 in a sample of Parkinson XXXX , @entity10 @entity1 , and controls.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity10 :: ('MESH:D006261', 'Disease') :: ['headache'] @entity2794 :: ('MESH:D020773', 'Disease') :: ['chronic headache'] @entity191 :: ('MESH:D010300', 'Disease') :: ["Parkinson's disease", 'PD']
@entity1 :: (9606,Species) :: ['patients']
