. . . [P]oor people face various limits, and their ability to capitalize on opportunities varies greatly. One of the next steps is to find simple ways to identify those differences and cater to them with the right products delivered with the right design.
Details matter. Individual characteristics of clients matter. And design matters.
That is from a new literature survey: "Latest Findings from Randomized Evaluations of Microfinance" by Bauchet et al. It includes 10 studies around the world. See "Mostly Economics" post. HT: Mostly Economics.