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Are Bar Charts Racist?

Notes, links, and follow up materials for the National Council on Measurement in Education (NCME), toward more equitable, effective achievement reporting.

Thank you for the opportunity to share. Notes and materials are below for reference.

Related Material

Related Original Research


Must Be A Tuesday: Affect, Attribution, and Geographic Variability in Equity-Oriented Visualizations of Population Health Disparities

Collaboration with Lace Padilla, examining equitable data design techniques for population mortality charts.



Talk Notes

Introduction

When people think of “good dataviz” they think of John Snow’s maps, because good dataviz is supposed to be intellectual and enlightening. It works by guiding us toward smarter, more rational decisions. But there are other ways that data can influence us, and a surprising amount of it relates to social psychology.

Public dataviz (e.g. dashboards published by institutions like health or education agencies) can also be influential, but not always in the ways we expect. Conventional ways of visualizing social outcome disparities are an example where conventional data visualization approaches can backfire.



Pointing the finger

Divisive dataviz
Hiding outcome variability supports harmful stereo­types.

Visualizing people as monoliths makes them seem monolithic.

When visualizing social outcomes, highlighting within-group outcome variability can reduce misattribution and stereotyping. This implies that it's possible to design charts that are less toxic, and still effective for their original communication goals. It also implies that data designers have a choice, and a responsibility, in how they visualize social outcome disparities.



'Must Be A Tuesday' study implications
We’re not stuck with bar charts.

Conventional charts may feel familiar, but there’s no intrinsic advantage to them. In our "Must Be A Tuesday" study, we found that conventional bar charts and the alternative geo-emphasis charts were both effective for influencing health risk perception, behavioral intent, and policy support. This demonstrates the possibility that health institutions can change the way we visualize social outcomes, without sacrificing our original communication goals.

a curious guinea pig
Would you like to be a guinea pig?

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