Supplemental Material for

Measuring Depression Over Time . . . or not? Lack of Unidimensionality and Longitudinal Measurement Invariance in Four Common Rating Scales of Depression

Eiko I. Fried, Claudia D. van Borkulo, Sacha Epskamp, Robert A. Schoevers, Francis Tuerlinckx, and Denny Borsboom

Psychological Assessment, Vol. 28, No. 11, pp. 1354–1367

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