Can a tested & validated scale having responses in a 7-point Likert scale be used in terms of responses in 5 point LikERT scale? - Quora
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Does the number of response options matter? Psychometric perspectives using personality questionnaire data.
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Methodology in core outcome set (COS) development: the impact of patient interviews and using a 5-point versus a 9-point Delphi rating scale on core outcome selection in a COS development study
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