Goldhaber-Fiebert, Jeremy D.; Blumenkranz, Erik; … - 2010
exercise commitment contracts people entered into using a web-based contract creation tool. At the time of contract creation …, users selected a contract length (duration); number of times a week to exercise (frequency); and a financial penalty for … failing to live up to the contract in a given week (stake). We randomly set the default duration shown to users (8 weeks, 12 …