Microfinance programmes provide poor people with small loans given to jointly liable self-selected groups. Follow-up loans provide incentives to repay. In an experiment we investigate the influence of those features on strategic default. Each group member invests in an individual risky project,...

Essential characteristics of corruption are (1) a reciprocity relationship between briber and public official, (2) negative external effects to others, and (3) high penalties for the parties involved in case of discovery. We separate the behavioural influences of these factors in a laboratory...