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. 2015 Oct 28;10(10):e0141532.
doi: 10.1371/journal.pone.0141532. eCollection 2015.

The Many Facets of Genetic Literacy: Assessing the Scalability of Multiple Measures for Broad Use in Survey Research

Leah R Abrams  1 , Colleen M McBride  2 , Gillian W Hooker  3 , Joseph N Cappella  4 , Laura M Koehly  1
Affiliations

The Many Facets of Genetic Literacy: Assessing the Scalability of Multiple Measures for Broad Use in Survey Research

Leah R Abrams et al. PLoS One. .

Abstract

Objectives: To determine how three dimensions of genetic literacy (familiarity, skills, and factual knowledge) fit the hierarchy of knowledge outlined in E.M. Rogers' Diffusion of Innovations to better conceptualize lay understandings of genomics.

Methods: A consumer panel representing the US adult population (N = 1016) completed an electronic survey in November 2013. Adjusting for education, we used correlations, principle components analysis, Mokken Scale tests, and linear regressions to assess how scores on the three genetic literacy sub-dimensions fit an ordered scale.

Results: The three scores significantly loaded onto one factor, even when adjusting for education. Analyses revealed moderate strength in scaling (0.416, p<0.001) and a difficulty ordering that matched Rogers' hierarchy (knowledge more difficult than skills, followed by familiarity). Skills scores partially mediated the association between familiarity and knowledge with a significant indirect effect (0.241, p<0.001).

Conclusion: We established an ordering in genetic literacy sub-dimensions such that familiarity with terminology precedes skills using information, which in turn precedes factual knowledge. This ordering is important to contextualizing previous findings, guiding measurement in future research, and identifying gaps in the understanding of genomics relevant to the demands of differing applications.

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Conflict of interest statement

Competing Interests: The authors have the following interests: Gillian W. Hooker is employed by NextGxDx. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Figures

Fig 1
Fig 1. Applying Rogers’ levels of knowledge to Genetic Literacy Survey measures.
Fig 2
Fig 2. Mediation Model.
Showing effect size (standard deviation); adjusting for education; * p<0.05. **p = 0.01, *** p<0.001.
See this image and copyright information in PMC

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