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Measuring Graph Literacy without a Test: A Brief Subjective Assessment.

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A new subjective graph literacy (SGL) scale offers a quick and reliable way to assess understanding of visual risk information. This tool is less anxiety-provoking than objective graph literacy (OGL) tests and aids communication.

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Area of Science:

  • Health communication
  • Psychometrics
  • Risk perception

Background:

  • Visual aids improve risk communication for diverse populations, but require basic graph literacy.
  • Objective graph literacy (OGL) tests identify skill gaps but are time-consuming and can cause anxiety.
  • There is a need for a faster, less stressful method to assess graph literacy.

Purpose of the Study:

  • To evaluate a brief assessment of subjective graph literacy (SGL), or self-reported ability to interpret graphs.
  • To determine the robustness and validity of the SGL scale.
  • To compare SGL with OGL in diverse cultural samples.

Main Methods:

  • Instrument development and validation through a focus group and four studies.
  • Assessment of reliability, convergent, discriminant, and predictive validity.
  • Inclusion of diverse participants from the US, Spain, and international surgeons.

Main Results:

  • The SGL scale reliably, robustly, and validly assesses graph literacy and communication preferences in approximately one minute.
  • SGL assessment evoked fewer negative emotional reactions compared to OGL.
  • The scale demonstrated strong psychometric properties across diverse samples.

Conclusions:

  • The SGL scale is a suitable, efficient, and less anxiety-inducing alternative for assessing graph literacy in research and practice.
  • SGL can serve as a valuable communication aid in clinical settings.
  • Further research should explore theoretical mechanisms and applications of SGL.