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Direct linkLee, Jihyun; Paek, Insu – Journal of Psychoeducational Assessment, 2014
Likert-type rating scales are still the most widely used method when measuring psychoeducational constructs. The present study investigates a long-standing issue of identifying the optimal number of response categories. A special emphasis is given to categorical data, which were generated by the Item Response Theory (IRT) Graded-Response Modeling…
Descriptors: Likert Scales, Responses, Item Response Theory, Classification
