We estimate the social and private costs of consumer-to-business payments in Sweden in 2009. The combined social cost for these payments was 0.68 per cent of GDP. At the point of sale, cash is socially less costly than debit cards for payments below EUR 1.88 (SEK 20) and credit cards below EUR...

We consider a leader and a subordinate he appoints who engage in team production. The public observes the organization's performance, but is unable to determine the separate contributions of the leader and of the subordinate. The leader may therefore claim credit for the good work of his...