This study examined endline survey data from intervention evaluations in Bangladesh, Ethiopia, and Vietnam to assess how different combinations of social and behavior change communication interventions and varying levels of exposure to the interventions affected infant and young child feeding (IYCF) practices. The authors found that 1) the level of exposure to interventions mattered, but the effects varied among mothers across the three countries, and 2) the combination of interventions required to achieve IYCF behavior change was context specific.