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Background: The model of selection, optimization and compensation has been proposed as a model of adaptive management strategies throughout the lifespan. Aim: The aim of this study was to test the psychometric properties of a translated Swedish version of the 12-item selection, optimization, and compensation (SOC) questionnaire. Method: The 12-item SOC questionnaire is composed of four subscales: elective selection (ES), loss-based selection, optimization and compensation. A convenience sample of 122 Swedish-speaking people, aged 19-85, participated in a study of the validity and reliability of the SOC questionnaire. Cronbach’s alpha coefficient, corrected item-total correlation and Cronbach’s alpha if item deleted were used for reliability testing. Two other scales, the ways of coping questionnaire and Rosenberg’s self-esteem scale, were used to test convergent validity, and the geriatric depression scale was used to test discriminant validity. Stability over time was evaluated using a test-retest model with a 2-week interval. Results: The 12-item SOC questionnaire showed a Cronbach’s alpha value of 0.50, and the subscales ranged from a = 0.16 to a = 0.64. Two items in the ES subscale had negative values on the corrected item-total correlation and showed substantial improvement (>0.05) in Cronbach’s alpha when item deleted. When these two items that influenced internal consistency were deleted, Cronbach’s alpha rose to 0.68. Conclusion: The Swedish version of the 12-item SOC questionnaire showed deficiencies in a test of internal consistency because of two items in the ES subscale, and these two items were deleted. A consequence of the reduction is a weakening of the ES subscale and thereby to some extent the SOC questionnaire in total. Further testing is advisable. However, the 10-item SOC questionnaire was acceptable in a test of validity and reliability. Published by arrangement with John Wiley & Sons.

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