In rural Uganda, Paul Bolton and his colleagues, using villagers, demonstrated that they could deliver interpersonal psychotherapy for depression and, using a randomized control design, showed that 90 percent of the people receiving this intervention recovered as compared to roughly 40 percent in the comparison villages.
Na Uganda rural, Paul Bolton e os seus colaboradores demostraron que os aldeáns podían facer psicoterapia para a depresión e mediante un estudo aleatorio controlado demostró que o 90% das persoas que  recibiron esta intervención se recuperaron fronte a un 40% no grupo control.