Item response theory in affective instrument development: an illustration.

@article{Beck2001ItemRT,
  title={Item response theory in affective instrument development: an illustration.},
  author={Cheryl Tatano Beck and Robert K. Gable},
  journal={Journal of nursing measurement},
  year={2001},
  volume={9 1},
  pages={
          5-22
        }
}
The benefits of item response theory (IRT) analysis in obtaining empirical support for construct validity make it an essential step in the instrument development process. IRT analysis can result in finer construct interpretations that lead to more thorough descriptions of low- and high-scoring respondents. A critical function of IRT is its ability to determine the adequacy with which the attitude continuum underlying each dimension is assessed by the respective items in an instrument. Many… CONTINUE READING

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