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Examining item content validity using property fitting analysis via multidimensional scaling.

Cody Ding1,2

  • 1Shenyang Normal University, College of Education, Shenyang, China.

International Journal of Methods in Psychiatric Research
|February 9, 2019
PubMed
Summary
This summary is machine-generated.

Property fitting analysis enhances the quality of items in research instruments. This quantitative method improves item selection for reliable and valid research findings.

Keywords:
explicit item property criteriaitem content validityitem property fitting analysismultidimensional scaling

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Area of Science:

  • Psychometrics
  • Quantitative Psychology
  • Research Methodology

Background:

  • Multiple-item instruments are crucial in various research fields.
  • The trustworthiness of research outcomes heavily relies on the quality of instrument items.
  • Evaluating content validity of items is essential for robust research.

Purpose of the Study:

  • To introduce and demonstrate property fitting analysis as a method for evaluating item content validity.
  • To assess the appropriateness of items based on explicit item property criteria.
  • To improve the quality of items in measuring instruments.

Main Methods:

  • Property fitting analysis was proposed as a novel approach.
  • Multidimensional scaling models were employed for quantitative evaluation.
  • The Center for Epidemiologic Studies Depression scale served as a case study, using rating data from 12 counselors.

Main Results:

  • Utilizing explicit item property criteria for item selection enhanced overall item quality.
  • Improvements were observed in terms of reliability and factor structure of the selected items.
  • Property fitting analysis provided a quantitative basis for evaluating item content validity.

Conclusions:

  • Property fitting analysis offers a viable quantitative method for researchers.
  • This approach aids in the rigorous evaluation of item content validity.
  • The method contributes to enhancing the psychometric properties of research instruments.