Jeff Marowits, CEO of Keystone recently interviewed Emily Chissell, Partner at Keystone and former director of the @Competition and Markets Authority and Professor Michael Luca, director of the Technology and Society Initiative at the Johns Hopkins Carey School of Business.

The pair contributed to a paper titled “The Effect of Choice Screens on Mobile Browser Usage: Evidence from the EU Digital Markets Act,” in partnership with the National Bureau of Economic Research.

Using browser usage data from Mozilla, the researchers found that requiring users to actively choose a browser increased Firefox usage across the EU. But the impact differed dramatically across platforms. Fifteen months after implementation, Firefox usage was 113% higher on iOS and 12% higher on Android relative to what the researchers estimate would have occurred without the mandate.

Jeff also took the opportunity to ask the two experts about the field of behavioral economics more broadly.

Watch some segments from the conversation below: