
A group of researchers in the United States and China have retracted their 2018 paper on hand hygiene, admitting that they can’t account for “data anomalies” in their work.
The article in question, “The decoy effect as a nudge: Boosting hand hygiene with a worse option,” appeared in Psychological Science last May. Meng Li, of the Department of Health and Behavioral Sciences at the University of Colorado Denver, and Hui Chen, of the Chinese Academy of Sciences, reported results from experiments designed to increase the use of hand sanitizer in the workplace through the use of a “decoy” bottle:
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