BIS 11 - Norwegian version

Norwegian language version of the Barratt Impulsiveness Scale.  This page provides a summary of the psychometric properties of the Norwegian language version of the BIS-11 (Lindstrøm, Wyller, Halvorsen, Hartberg, and Lundqvist, 2017), along with a copy of this form. 

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Sample
110 adults
adolescents (ages 20 - 85 years of age): 47 healthy controls, 43 Parkinson patients, and 20 chronic headache patients.

Translation Method
Forward-backward translation from the English version by 5 plus 2 bilingually fluent volunteers as well as control of the convergence of the translated versions by two additional specialists in medicine and psychology..

Item Analysis
Cronbach’s alpha = .68 (healthy controls 0.60, Parkinson patients 0.70, chronic headache patients 0.76)
Test-retest reliability  r > .70

Bland-Altman analysis gave test-retest bias -0.73.

Factor Analysis 
Exploratory (principal component analysis, Promax rotation) and confirmatory factor analyses performed for a one-factor model, the original three-factor model (Patton et al 1995) and a two-factor model showed fit indices compliant with best fit for the two-factor model (moderate fit). The two factors are referred to as the cognitive impulsivity factor and the behavioural impulsivity factor.  Items 2, 5, 10, 14, 22 and 25 belong to both subscales. Item 3 and 4 belong to neither, but should be included in the total score.

Scoring

Items are scored on a 4-point scale:
     Rarely/Never = 1
     Occasionally = 2
     Often = 3
     Almost Always/Always = 4

Barratt Impulsiveness Scale 11 – Factor Structure and Scoring for the

Norwegian version

 

Factor

 

# of items

 

Items contributing to each subscale

Cognitive

19

1*, 2, 5, 7*, 8*, 9*, 10*, 12*, 13*, 14, 15*, 18, 20*, 22, 23, 25, 27, 29*, and 30*

Behavioural

15

2, 5, 6, 10*, 11, 14, 16, 17, 19, 21, 22, 24, 25, 26, 28

 

 

*reverse scored items


References 
Psychometric properties of the Norwegian version of the Barratt Impulsiveness Scale-11 (BIS-11).
Lindstrøm JC, Wyller NG, Halvorsen MM, Hartberg S, Lundqvist C. (2017).
Brain and Behavior, 7(1), e00605.
PubMed ID 28127523

This Norwegian language form is reprinted with permission from Dr. Christoffer Lundqvist.  The International Society for Research on Impulsivity acknowledges the generous support of Dr. Christoffer Lundqvist, Consultant Neurologist Akershus University Hospital and University of Oslo Norway