Small Enough to Use, Sharper Together: VQIDS and FIRM in U.S. Youth Ages 6 18

Objective: Brief measures of depressive symptoms and family psychiatry history may support the identification of youth who warrant further assessment, but their interpretation requires population-based measurement evidence. This study evaluated the Very Quick Inventory of Depressive Symptomatology (VQIDS) and Family Index of Risk for Mood (FIRM) in the BENCHMARK 2025 national survey. Method: The sample consisted of 2,252 parent reports for children aged 6-18 years and 1,008 linked adolescent self-reports aged 12-18 years. Analyses examined VQIDS dimensionality, reliability, item functioning, a

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