A methodological note on ordered Q-Sort ratings |
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| Authors: | David G. Serfass Ryne A. Sherman |
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| Affiliation: | 1. Center for Behavioral Cardiovascular Health, Columbia University Medical Center, United States;2. Department of Psychology, St. John’s University, United States;3. Section of Cardiovascular Medicine, Yale University School of Medicine, United States;4. Department of Psychiatry and Behavioral Science, Stony Brook University, United States;1. Department of Psychology, University of Western Ontario, Canada;2. Department of Psychology, National University of Singapore, Singapore;1. Department of Natural Resource Sciences, McGill University, Canada;2. Wildlife Institute of India, Dehradun, India |
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| Abstract: | Patterns of ratings using the Q-Sort method and the Likert-type method are compared. Ordering effects are found in Q-Sort ratings that are not present in Likert-type ratings. Specifically, item order is related to both item variance and item placement, such that items appearing near the end of the Q-Sort have less variance and more central placement. This finding is verified across three measures in several datasets spanning nearly 20 years of research. Such item order effects appear to attenuate average absolute relationships (covariances and correlations) between items appearing near the end of the Q-Sort and other measures. Randomization of items may be (in some situations) a viable course of action to minimize these effects at a sample level. |
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| Keywords: | Q-Sort Likert-type ratings Item order effects Method effects |
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