The city of Medellín, Colombia was a cauldron of violence with 185 homicides per 100,000 people in 2002. By 2006, this rate had declined to 32.5. Such successful transformation was termed the 'Medellín miracle' and credited to policies of the city's mayor, Sergio Fajardo. Fajardo came to...

Many public sector reforms in developing countries fail to make governments more functional. This is typically because reforms introduce new solutions that do not fit the contexts in which they are being placed. This situation reflects what has recently been called the 'capability trap' in...

Public sector reforms are commonplace in developing countries. Much of the literature about these reforms reflects on their failures. This paper asks about the successes and investigates which of two competing theories best explain why some reforms exhibit such positive deviance. These theories...