Collaborative program evaluations using randomized controlled trials, among other methods, can provide substantive insight into nutrition behavior change interventions. This paper describes lessons learned from efforts led by the Alive & Thrive global nutrition initiative. Evaluations conducted in Bangladesh, Vietnam, and Ethiopia, among other countries, are the basis for a wealth of information about large-scale behavior change interventions delivered through diverse platforms including government health systems, community-based platforms, and mass media.

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