Improving diet quality has been a major target of public health policy. Governments have encouraged consumers to make healthier food choices and firms to reformulate food products. Evaluation of such policies has focused on the impact on consumer behaviour; firm behaviour has been less well...

In 2014, the United States Food and Drug Administration announced that chain restaurants with 20 or more locations would be required to put calorie labels on the menu. The merits of the policy depend in large part on three empirical issues: 1) if calorie labels help correct calorie under- or...