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Related Concept Videos

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Using Rasch measurement for instrument rating scale refinement.

Michael J Peeters1, Jill M Augustine2

  • 1University of Toledo College of Pharmacy & Pharmaceutical Sciences, 3000 Arlington Ave, Mail Stop 1013, Toledo, OH 43614, United States.

Currents in Pharmacy Teaching & Learning
|March 10, 2023
PubMed
Summary
This summary is machine-generated.

Rasch measurement offers a rigorous method to validate instruments, especially their rating scales. This analysis tool provides essential validity evidence for psychosocial and learning measures, ensuring accurate and precise scientific measurement.

Keywords:
RaschRasch measurementRating scalesValidity

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Area of Science:

  • Psychometrics
  • Educational Measurement
  • Psychosocial Research

Background:

  • Rating scales are crucial for psychosocial and learning instruments.
  • Ensuring rating scales function properly is vital for effective measurement.
  • Rasch measurement provides a method to investigate rating scale functionality.

Purpose of the Study:

  • To highlight the unique analysis of rating scales offered by Rasch measurement.
  • To demonstrate how Rasch measurement can validate previously developed instruments.
  • To examine the functioning of rating scales with new respondent groups.

Main Methods:

  • Review of Rasch measurement principles.
  • Focus on Rasch analysis of rating scales.
  • Comparison with Classical Test Theory and Item Response Theory.

Main Results:

  • Rasch measurement provides validity evidence for instruments.
  • It uniquely analyzes the functioning of rating scales.
  • It can be applied to both new and existing instruments.

Conclusions:

  • Rasch measurement offers a rigorous approach to instrument development and validation.
  • It enhances the scientific accuracy and precision of measurement.
  • Researchers can use Rasch analysis to generate validation evidence for existing instruments.