Psychometric properties of the Icelandic NEO-FFI in a general population sample compared to a sample recruited for a study on the genetics of addiction

•The Icelandic NEO-FFI was tested in large general population and addiction samples.•NEO-FFI of treated addicts, untreated relatives, and ever smokers were compared.•Factor analyses found the N and C scales most robust.•High N, low C, and low A predicted membership in the addiction treated group. Pe...

Full description

Saved in:
Bibliographic Details
Published in:Personality and individual differences 2014-02, Vol.58, p.71-75
Main Authors: Bjornsdottir, Gyda, Jonsson, Fridrik H., Hansdottir, Ingunn, Almarsdottir, Anna B., Heimisdottir, Maria, Tyrfingsson, Thorarinn, Runarsdottir, Valgerdur A., Kristjansson, Kristleifur, Stefansson, Hreinn, Thorgeirsson, Thorgeir E.
Format: Article
Language:English
Subjects:
Addiction
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Medical sciences
NEO-FFI
Personality. Affectivity
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychometrics
Psychometrics. Diagnostic aid systems
Psychopathology. Psychiatry
Techniques and methods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•The Icelandic NEO-FFI was tested in large general population and addiction samples.•NEO-FFI of treated addicts, untreated relatives, and ever smokers were compared.•Factor analyses found the N and C scales most robust.•High N, low C, and low A predicted membership in the addiction treated group. Personality traits are major determinants of social behavior influencing various diseases including addiction. Twin and family studies suggest personality and addiction to be under genetic influence. Identification of DNA susceptibility variants relies on valid and reliable phenotyping approaches. We present results of psychometric testing of the Icelandic NEO-FFI in a population sample (N=657) and a sample recruited for a study on addiction genetics (N=3804). The Icelandic NEO-FFI demonstrated internal consistency and temporal stability. Factor analyses supported the five-factor structure. Icelandic norms were compared to American norms and language translations selected for geographical and cultural proximity to Iceland. Multiple discriminant function analysis using NEO-FFI trait scores and gender as independent variables predicted membership in recruitment groups for 47.3% of addiction study cases (N=3804), with accurate predictions made for 69.5% of individuals with treated addiction and 43.3% of their first-degree relatives. Correlations between NEO-FFI scores and the discriminant function suggested a combination of high neuroticism, low conscientiousness and low agreeableness predicted membership in the Treated group.
ISSN:0191-8869
1873-3549
DOI:10.1016/j.paid.2013.10.010