Eco-labels are part of a new wave of environmental policy that emphasizes information disclosure as a tool to induce environmentally friendly behavior by both firms and consumers. Little consensus exists as to whether eco-certified products are actually better than their conventional...

Exploiting a natural experiment for New York City restaurants we analyze whether consumers’ quality perception is influenced by newly appearing expert opinion. As the leading restaurant guide Zagat has rated New York City’s restaurants since 1979 by drawing on consumer surveys. In 2005, with...