The information asymmetries inherent in credence goods have typically led economists to conclude these markets require well-defined quality standards and third-party verification that producers are meeting those standards. Nonetheless, many producers of credence goods appear to be opting out of...

We compare certification to a minimum quality standard (MQS) policy in a duopolistic industry where firms incur quality-dependent fixed costs and only a fraction of consumers observes the quality of the offered goods. Compared to the unregulated outcome, both profits and social welfare would...