TY - JOUR
T1 - Factor Structure, Convergent, and Divergent Validity of the Prodromal Questionnaire–Negative Symptom Subscale
AU - Pierce, Katherine M.
AU - Maxwell, Seth D.
AU - Olino, Thomas M.
AU - Cooper, Shanna
AU - Ellman, Lauren M.
N1 - Publisher Copyright:
© The Author(s) 2020.
PY - 2021/1
Y1 - 2021/1
N2 - 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.
AB - 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.
KW - Prodromal Questionnaire
KW - convergent validity
KW - divergent validity
KW - exploratory factor analysis
KW - negative symptoms
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U2 - 10.1177/1073191119899981
DO - 10.1177/1073191119899981
M3 - Article
C2 - 31955596
AN - SCOPUS:85078200062
SN - 1073-1911
VL - 28
SP - 153
EP - 168
JO - Assessment
JF - Assessment
IS - 1
ER -