Healthier by Precommitment

  title={Healthier by Precommitment},
  author={Janet Schwartz and Daniel Mochon and Lauren Wyper and Josiase Maroba and Deepak Patel and Dan Ariely},
  journal={Psychological Science},
  pages={538 - 546}
We tested a voluntary self-control commitment device to help grocery shoppers make healthier food purchases. Participants, who were already enrolled in a large-scale incentive program that discounts the price of eligible groceries by 25%, were offered the chance to put their discount on the line. Agreeing households pledged that they would increase their purchases of healthy food by 5 percentage points above their household baseline for each of 6 months. If they reached that goal, their… 

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