We evaluate an intervention designed to increase teachers' awareness of social isolation by providing them with their own students' social network and information on developmental risks associated with social exclusion. Using friendship data and incentive-compatible measures of antisocial and...

The pricing and advertising of tied add-ons and overages have come under increasing scrutiny. Working with a large Turkish bank to test SMS direct marketing promotions to 108,000 existing holders of "free" checking accounts, we find that promoting a large discount on the 60% APR charged for...