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Abstract

Purpose: The purpose of this study was to assess the measurement characteristics of the Multi-Problem Screening Inventory (MPSI) depression subscale. Method: A sample of 542 responses to the MPSI was obtained from persons seeking assistance in any of several child and family service agencies. The responses on the depression subscale were analyzed using item response theory and generalizability theory methods. Results: The MPSI depression subscale produced scores with very desirable measurement properties for use in (a) monitoring a client's change in depression across time and (b) making tentative decisions concerning the clinical significance of a client's depression level. The measurement error characteristics of the MPSI depression subscale scores reach a minimum just below the clinical cutting point and then remain constant across the clinical cutting point and across the range of clinically significant depression levels. Conclusions: The results of this study suggest that the MPSI depression subscale can be used by social work practitioners to both assess and monitor their clients' problems with depression.

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A Psychometric Study of the Multi-Problem Screening Inventory Depression Subscale Using Item Response and Generalizability Theories

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