Short Versus Long Scales in Clinical Assessment: Exploring the Trade-Off Between Resources Saved and Psychometric Quality Lost Using Two Measures of Obsessive–Compulsive Symptoms
| Autor: | Douglas B. Samuel, Norbert Kathmann, Stefanie Trapp, Christoph Kemper, Matthias Ziegler |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male Obsessive-Compulsive Disorder 050103 clinical psychology Adolescent Psychometrics media_common.quotation_subject construct validity 050109 social psychology Trade-off Young Adult Resource (project management) ddc:150 Surveys and Questionnaires short scale Humans 0501 psychology and cognitive sciences Quality (business) ddc:610 test evaluation Applied Psychology Reliability (statistics) Aged media_common Psychiatric Status Rating Scales test objective short form 05 social sciences Discriminant validity short measure Reproducibility of Results Construct validity clinical assessment Middle Aged Test (assessment) Clinical Psychology 150 Psychologie Case-Control Studies Scale (social sciences) Female 610 Medizin und Gesundheit Psychology Clinical psychology |
| Zdroj: | Assessment. 26:767-782 |
| ISSN: | 1552-3489 1073-1911 |
| DOI: | 10.1177/1073191118810057 |
| Popis: | Short measures of psychological constructs are routinely used to save assessment time and cost. The downside is a trade-off between resource savings and psychometric quality. When evaluating tests, a pragmatic strategy is frequently applied that neglects the assessment objective, which may result in unfair rejection or unmindfully acceptance of short scales. Our main aim is to demonstrate the consequences of applying a pragmatic test evaluation strategy. We used two tests that measure the same construct—obsessive-compulsive symptomatology—but differ considerably in test length (1:3) and evaluated the measures by taking the assessment objective into account. The two scale scores showed distinct profiles of psychometric qualities. Whereas routinely evaluated reliability, factorial validity, and convergent/discriminant validity did not differ, rendering both tests useful for research purposes, substantial differences were found for qualities that are rarely focused on—measurement precision and diagnostic validity—which are highly relevant for accurate decisions in clinical practice. |
| Databáze: | OpenAIRE |
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