Switch to two-point rating scales to reduce racism in performance reviews, research suggests

The plumber has just left after fixing that leaky basement pipe. Ping—a phone alert asks you to rate their service. Hmm—if it wasn’t an outright terrible job, do you give them three, four or five stars? New research from the University of Toronto’s Rotman School of Management shows that a multi-point system like that is prone to subtle, often unconscious, racial bias—yet with significant financial consequences for non-white workers.

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