Abstract
When one test form is significantly and intentionally more difficult than another, a link that places scores from these test forms on a common scale might be called a “vertical” link, and the scale on which the scores are reported will commonly be called a “vertical scale.” Tests might be scaled so that they support interpretations that are not available by examining or summarizing only the items answered correctly or incorrectly.
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Patz, R.J., Yao, L. (2007). Methods and Models for Vertical Scaling. In: Dorans, N.J., Pommerich, M., Holland, P.W. (eds) Linking and Aligning Scores and Scales. Statistics for Social and Behavioral Sciences. Springer, New York, NY. https://doi.org/10.1007/978-0-387-49771-6_14
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DOI: https://doi.org/10.1007/978-0-387-49771-6_14
Publisher Name: Springer, New York, NY
Print ISBN: 978-0-387-49770-9
Online ISBN: 978-0-387-49771-6
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