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Genetic literacy scale: Construct and discriminant validity and population differences.

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Summary
This summary is machine-generated.

The Genetic Literacy Scale (GLS) was refined to GLS-25, a valid tool for assessing genetic literacy. Findings show genetic literacy differs by demographics and is distinct from health literacy and numeracy.

Keywords:
Construct validityDiscriminant validityGenetic literacyHealth literacyNumeracy

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Area of Science:

  • Genetics and Public Health
  • Psychometrics and Measurement
  • Health Communication

Background:

  • Genetic literacy is crucial for informed health decisions.
  • Existing measures may lack psychometric rigor.
  • Understanding demographic variations in genetic literacy is essential.

Purpose of the Study:

  • To validate the Genetic Literacy Scale (GLS).
  • To establish its discriminant validity against health literacy and numeracy.
  • To explore demographic predictors of genetic literacy.

Main Methods:

  • A national sample of 650 participants completed a cross-sectional survey.
  • Confirmatory factor analysis (CFA) validated the GLS structure.
  • Discriminant validity was assessed using the heterotrait-monotrait ratio.
  • Multiple regression analyzed demographic predictors.

Main Results:

  • A refined 25-item version (GLS-25) demonstrated strong psychometric properties.
  • Genetic literacy was confirmed as distinct from health literacy and numeracy.
  • Educational attainment, income, and White non-Hispanic ethnicity predicted higher genetic literacy.

Conclusions:

  • The GLS-25 is a psychometrically sound measure for assessing genetic literacy.
  • Significant demographic disparities in genetic literacy were identified.
  • Findings support using GLS-25 for tailored health communication and education.