Can PHQ-9 and DASS-21 Tell Us More Than a Depression Score?
PHQ-9 and DASS-21 can reveal more than symptom totals, including item performance, symptom patterns, scale structure, and differences between groups.
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Tag: psychometrics
Which Depression Symptoms Matter Most? What Item Response and Network Analysis Revealed
A Pakistani university study used item response and network analysis to reveal which PHQ-9 depression symptoms carried the most information.
When Depression, Anxiety and Stress Overlap: What Our DASS-21 Analysis Revealed
A Pakistani university study found strong overlap between DASS-21 depression, anxiety and stress, raising important questions about subscale interpretation.
Does the DASS-21 Really Measure Three Distinct Constructs? Evidence From Pakistani Students
Pakistani student data supported the DASS-21 three-factor structure, but very high factor correlations raise questions about how distinct the scales are.