Traditional development programs often operate like factory machines, relying on a continuous supply of external funding and resources to deliver services like improved education, clean water, or public health. While effective in some contexts, this approach often struggles with long-term sustainability.
Behavioral science offers a "renewable" source of energy: people’s own decisions and behaviors. As an interdisciplinary field combining economics, psychology, and other disciplines, it helps practitioners understand human decision-making and design targeted interventions.
According to the report, applying behavioral science helps development practitioners primarily by:
- Improving cost-effectiveness: subtle nudges and light-touch interventions can produce outsized impacts at a relatively low cost.
- Driving sustained impact: targeted interventions can create durable changes to people’s environments, habits, and social norms, delivering impact that outlives the initial project.
- Fostering local engagement: by developing interventions in partnership with local communities, the resulting designs are more culturally appropriate, grounded in people's lived realities, and likely to be maintained.
Ultimately, these recommendations provide insight into how the development community can better harness the sustainable energy of human behavior. By treating people's decisions as a core component of program design, practitioners can use behavioral science as a powerful tool to generate reliable, enduring outcomes in people’s lives.
Authors
- Engy Saleh
- Francis Meyo
- Anna Yalouris
- Wairimu Muthike
- Patrick Forscher
- Gideon Too
- Mareike Schomerus
- Steve Wendel
- Alexandra De Fillippo


