Wyse Adam E
Adam E. Wyse, The American Registry of Radiologic Technologists, 1255 Northland Dr., St. Paul, MN 55120, USA,
J Appl Meas. 2017;18(1):43-53.
Scale anchoring is a method to provide additional meaning to particular scores at different points along a score scale by identifying representative items associated with the particular scores. These items are then analyzed to write statements of what types of performance can be expected of a person with the particular scores to help test takers and other stakeholders better understand what it means to achieve the different scores. This article provides simple formulas that can be used to identify possible items to serve as scale anchors with the Rasch model. Specific attention is given to practical considerations and challenges that may be encountered when applying the formulas in different contexts. An illustrative example using data from a medical imaging certification program demonstrates how the formulas can be applied in practice.
量表锚定是一种通过识别与特定分数相关的代表性项目，为分数量表上不同点的特定分数赋予额外意义的方法。然后对这些项目进行分析，以撰写关于具有特定分数的人可能预期的表现类型的陈述，以帮助考生和其他利益相关者更好地理解获得不同分数的含义。本文提供了一些简单的公式，可用于识别可能用作Rasch模型量表锚点的项目。特别关注在不同背景下应用这些公式时可能遇到的实际考虑因素和挑战。一个使用医学成像认证项目数据的示例说明了这些公式在实践中如何应用。
