Pay them. But how do you know they did it?
public health experts have long struggled to convince TB patients resistant to drugs to continue taking their drugs after they get better to eradicate resistant strains. But the monitoring of compliance was horribly difficult. A new solution, brilliant? Having patients urinate on chemically treated paper to reveal a secret code word or if urine contains evidence of the drug. The patient then calls a number and receives money or other prizes as an incentive. It is the MIT scientists fruit.
(Hat tip to Steven Levitt.)
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