Gathering time-series data for evaluating behavior-change campaigns in developing countries: reactivity of diaries and interviews

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Tobias, R., & Inauen, J. (2010). Gathering time-series data for evaluating behavior-change campaigns in developing countries: reactivity of diaries and interviews. Evaluation Review, 34(5), 367-390. https://doi.org/10.1177/0193841X10383940