Beyond Cronbach’s Alpha: How We Tested the PHQ-9 and DASS-21 Using CFA, IRT and Network Analysis
See how CFA, item response theory and network analysis revealed what reliability coefficients alone could not about the PHQ-9 and DASS-21.
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Category: Mental Health Research
From PHQ-9 Scores to Symptom Networks: A Deeper Look at Student Mental Health
A 602-student Pakistani study shows how PHQ-9 scores, item response theory and symptom networks reveal detail hidden by total depression scores.
DASS-21 Reliability and Factor Structure in Pakistani University Students
New Pakistani data support good DASS-21 reliability and adequate factor-model fit, while raising questions about separation of its three subscales.