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Increased impulsivity as a vulnerability marker for bipolar disorder: evidence from self-report and experimental measures in two high-risk populations

Background - Heightened impulsivity has been suggested as a possible risk factor for bipolar disorder (BD). However, studies on high-risk populations are scarce and have mainly focused on individuals with a genetic risk. The present study investigated two high-risk samples for BD with regard to seve...

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Main Authors: Wessa, Michèle (Author) , Kollmann, Bianca (Author) , Linke, Julia (Author) , Schönfelder, Sandra (Author) , Kanske, Philipp (Author)
Format: Article (Journal)
Language:English
Published: 28 February 2015
In: Journal of affective disorders
Year: 2015, Volume: 178, Pages: 18-24
ISSN:1573-2517
DOI:10.1016/j.jad.2015.02.018
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.jad.2015.02.018
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0165032715001032
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Author Notes:Michèle Wessa, Bianca Kollmann, Julia Linke, Sandra Schönfelder, Philipp Kanske

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520 |a Background - Heightened impulsivity has been suggested as a possible risk factor for bipolar disorder (BD). However, studies on high-risk populations are scarce and have mainly focused on individuals with a genetic risk. The present study investigated two high-risk samples for BD with regard to several aspects of the impulsivity construct. - Methods - Unaffected relatives of BD patients (genetically defined high-risk group, N=29) and participants scoring high on the Hypomanic Personality Scale (psychometrically defined high-risk sample, N=25) were being compared to respective control groups (N=27 and N=25) using a multi-method approach. Participants were accessed on the Barratt Impulsiveness Scale-11 (BIS-11, trait impulsivity), the Stop Signal Task (response inhibition), and the Cambridge Gambling Task (impulsive behavior in decision-making processes). - Results - Both high-risk groups reported heightened impulsivity on the BIS-11, as well as impulsive decision-making, whereas no significant group differences in response inhibition were observed. - Limitations - Limitations were the lack in specificity of the results for BD and the cross-sectional study design, which does not allow conclusions about the influence of impulsivity on the development of or resilience for BD in risk groups. - Conclusions - Our findings support the assumption that increased trait impulsivity and impulsive decision-making are a vulnerability marker for and an endophenotype of BD. 
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