Expansión profiles Esther Duflo (J-PAL) and her Nobel-prize-winning approach to using behavioural economics for tackling poverty, alongside her J-PAL co-founder Abhijit Banerjee.
The article tracks how their methodology gained recognition among world leaders and institutions, including with former US president Barack Obama and the World Bank.
Speaking to Expansión, Duflo explains the method as: "Truly micro, like a homemaker managing the family finances.
"My projects always start with a very simple and orderly question that relates to people's reactions in a very specific context."