Psychometric properties of a Norwegian adaption of the Barratt Impulsiveness Scale‐11 in a sample of Parkinson patients, headache patients, and controls

Abstract

ObjectiveTo assess the psychometric properties of a Norwegian translation of the Barratt Impulsiveness Scale (BIS‐11) for use in populations of headache, Parkinson's disease (PD), and healthy controls.Materials and MethodsThe 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), PD patients (43), and chronic headache patients (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.ResultsThe Nor‐BIS‐11 scale showed good utility and acceptability as well as good test–retest reliability in this sample. Cronbach's α was .68, test–retest bias was −0.73, Cohen's δ = −.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.ConclusionsThe Nor‐BIS‐11 scale is acceptable and reliable to use in Parkinson's disease patients, chronic headache patients, 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.

Disentangling the relationship between cholesterol, aggression, and impulsivity in severe mental disorders

“…Internal consistency of the BIS-11 total score has been repeatedly reported as acceptable (Lindstrom, Wyller, Halvorsen, Hartberg, & Lundqvist, 2017;Patton et al, 1995;Reise, Moore, Sabb, Brown, & London, 2013;Stanford et al, 2009).…”

“…Hence, the total score ranges from 30 to 120, with higher scores reflecting higher levels of impulsivity. Internal consistency of the BIS‐11 total score has been repeatedly reported as acceptable (Lindstrom, Wyller, Halvorsen, Hartberg, & Lundqvist, 2017; Patton et al., 1995; Reise, Moore, Sabb, Brown, & London, 2013; Stanford et al., 2009).…”

Impulse control disorders in Parkinson's disease versus in healthy controls: A different predictive model

“…Instead, when examining other impulsivity traits there is still some concern regarding whether PD patients and the healthy controls (HCs) are characterized by different levels, since there are conflicting results. For instance, when comparing those two groups on the Barratt Impulsiveness Scale‐11 th version (BIS‐11; Patton, Stanford, & Barratt, ), some studies found that they did not score significantly different (e.g., Fonoff et al ., ; Lindstrøm, Wyller, Halvorsen, Hartberg, & Lundqvist, ), whereas others reported that PD patients scored higher than people without PD (e.g., Christenson et al ., ; Nombela, Rittman, Robbins, & Rowe, ; Piray et al ., ). Moreover, one study reported that PD patients who also reported ICDs were as impulsive as the HCs on the BIS‐11, whereas PD patients without ICDs were less impulsive (Voon et al ., ).…”

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“…The Barratt Impulsiveness Scale-11 (BIS-11) assesses overall impulsivity and three subscales -attention, motor and non-planning. Higher scores indicate greater impulsivity [22]. The Dutch version of the BIS-11 has been validated in normal and clinical samples [23].…”