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Assessment. 2019 Jan;26(1):45-55. doi: 10.1177/1073191117725171. Epub 2017 Aug 11.

Is the Assessment of Personality Comparable in Persons Who Have and Have Not Experienced Depressive, Anxiety, and Substance Use Disorders? An Examination of Measurement Invariance.

Author information

1
1 Temple University, Philadelphia, PA, USA.
2
2 University of Minnesota, Minneapolis, MN, USA.
3
3 Stony Brook University, Stony Brook, NY, USA.
4
4 University of Oregon, Eugene, OR, USA.
5
5 Oregon Research Institute, Eugene, OR, USA.

Abstract

Numerous studies have focused on characterizing personality differences between individuals with and without psychopathology. For drawing valid conclusions for these comparisons, the personality instruments used must demonstrate psychometric equivalence. However, we are unaware of any studies that examine measurement invariance in personality across individuals with and without psychopathology. This study conducted tests of measurement invariance for positive emotionality, negative emotionality, and disinhibition across individuals with and without histories of depressive, anxiety, and substance use disorders. We found consistent evidence that positive emotionality, negative emotionality, and disinhibition were assessed equivalently across all comparisons with each demonstrating strict invariance. Overall, results suggest that comparisons of personality measures between diagnostic groups satisfy the assumption of measurement invariance and these scales represent the same psychological constructs. Thus, mean-level comparisons across these groups are valid tests.

KEYWORDS:

measurement invariance; personality; psychopathology

PMID:
28799407
PMCID:
PMC5794665
[Available on 2020-01-01]
DOI:
10.1177/1073191117725171

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