Most techniques to aid maintenance and evolution of software require to define extension points. Generally, developers try to anticipate the parts that are more likely to evolve, but they can make mistakes and spend money in vain. With Unanticipated Software Evolution, developers can easily change any element of the software, even those that are not related with an extension point. However, we ...

In developing countries, mobile telecom networks have emerged as major providers of financial services, bypassing the sparse retail networks of traditional banks. We analyze a large individual-level data set of mobile money transactions in Tanzania. Transactions can be classified as (i) money transfers to others; (ii) short distance money selftransportation; and (iii) money storage for short to...

This study examines data drawn from the game show Friend or Foe? which is similar to the classic prisoner’s dilemma tale: partnerships are endogenously determined, and players work together to earn money, after which they play a one-shot prisoner’s dilemma game over large stakes: varying from $200 to (potentially) more than $22,000. The data reveal several interesting insights; perhaps most pro...

This research investigated impulse buying as resulting from the depletion of a common—but limited—resource that governs self-control. In three investigations, participants’ self-regulatory resources were depleted or not; later, impulsive spending responses were measured. Participants whose resources were depleted, relative to participants whose resources were not depleted, felt stronger urges t...