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[How can Instructions and Motivation for a Pension Influence the Response in Questionnaires?]
F Walter1, N Geissler2, F Petermann1
1Zentrum für Klinische Psychologie und Rehabilitation, Universität Bremen.
Aims Of The Study:
The study investigates whether the motivation for obtaining a pension together with written instructions change the response bias in symptom scales as well as symptom validity test.
Materials And Method:
80 warned and 91 unwarned claimants for disability pension due to a mental illness were recruited. Participants completed a socio-demographic questionnaire (with statements to measure motivation), the module A of the HEALTH-49 as well as the SIMS.
Results:
ANOVAs (analysis of variance) showed that warned claimants had significantly higher scores in total assets in symptom scales of the HEALTH-49 as well as the SIMS compared to the unwarned claimants. Warned persons showed higher odds for an invalid value in the SIMS. A regression analysis revealed that the item "retirement means for me a chance to be healthy" can predict the criterion total score of the SIMS.
Conclusion:
Warnings may produce negative response bias in symptom scales. Patients made negative response bias when they hope to recover through their pension.
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