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Factor Structure, Convergent, and Divergent Validity of the Prodromal Questionnaire-Negative Symptom Subscale.

Authors :
Pierce KM
Maxwell SD
Olino TM
Cooper S
Ellman LM
Source :
Assessment [Assessment] 2021 Jan; Vol. 28 (1), pp. 153-168. Date of Electronic Publication: 2020 Jan 19.
Publication Year :
2021

Abstract

Negative symptoms such as anhedonia are associated with psychosis risk and poorer outcomes. The Prodromal Questionnaire (PQ) is a self-report questionnaire used to screen for psychosis spectrum symptoms. However, the convergent and divergent validity and underlying factor structure of the PQ-negative symptom subscale (PQ-N) have yet to be examined. Undergraduates ( N = 1,556) completed the PQ, Temporal Experience of Pleasure Scale, and measures assessing anxiety, depression, and motivation. An exploratory factor analysis conducted on the PQ-N yielded a two-factor solution, reflecting subdimensions of social expression and dissociative-depressive experiences, contrary to previous research examining the factor structure of negative symptoms. Associations between the PQ-N, its two factors, and measures of negative symptoms and other psychopathology were examined. Results indicated that the PQ-N and its factors were more strongly correlated with measures of depression and anxiety than with measures of negative symptoms relating to motivation and pleasure, suggesting poor convergent and divergent validity.

Details

Language :
English
ISSN :
1552-3489
Volume :
28
Issue :
1
Database :
MEDLINE
Journal :
Assessment
Publication Type :
Academic Journal
Accession number :
31955596
Full Text :
https://doi.org/10.1177/1073191119899981