Instrument Development Tools and Activities for Measure Validation Using Rasch Models: Part Ⅱ—Validation Activities

摘要

Accumulation of validity evidence is an important part of the instrument development process. In Part Ⅰ of a two-part series, we provided an overview of validity concepts and described how instrument development efforts can be conducted to facilitate the development of validity arguments. In this, Part Ⅱ of the series, we identify how analyses, especially those conducted within a Rasch measurement framework, can be used to provide evidence to support validity arguments that are founded during the instrument development process.