Are measures of marital satisfaction valid for women with depressive symptoms? The examination of factor structure and measurement invariance of the Couple Satisfaction Index-4 across depression levels in Portuguese women
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2020
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Marital satisfaction (MS) is a key indicator of mental and physical health. Factor structure of
MS measures in individuals with clinical levels of depression as well as their measurement
invariance across groups with different levels of depression symptoms were not yet explored.
The lack of evidence of measurement invariance might compromise valid comparisons
between individuals with high and low levels of depression symptoms in MS. This study
examined the factor structure of the Couple Satisfaction Index-4 (CSI-4) among women with
clinical levels of depression, tested the CSI-4 measurement invariance across depression
levels groups, and investigated CSI-4 convergent and divergent validity. Participants were
891 heterosexual married/cohabiting women who were assigned into one of two groups based
on assessment of their levels of depression symptoms. Participants completed the CSI-4 and
self-reported measures used to examine convergent and divergent validity. Support was found
for the factor structure of the CSI-4 for the total sample and both high levels of depression
symptoms and low levels of depression symptoms groups. Subsequent multigroup
confirmatory factor analyses supported the measurement invariance of the CSI-4 across
depression levels groups. The CSI-4 revealed excellent values of internal consistency and
convergent and divergent validity. Our findings suggest that CSI-4 produces comparable
response patterns across depression groups and thus meaningful comparisons between groups
can be performed.
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PSICOLOGIA, PSYCHOLOGY