Study: Americans have become less biased—explicitly and implicitly—since 2004

The study suggest implicit biases can change significantly over a relatively short timeframe.

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  • The study examined the results of more than 4 million tests designed to measure implicit and explicit biases.
  • The tests measured attitudes toward groups defined by age, disability, body weight, race, skin tone, and sexuality.
  • All explicit biases decreased during the study's timeframe, while several categories of implicit bias diminished.
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