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Household Responses to Information on Child Nutrition: Experimental Evidence from Malawi

Presentation

Incorrect knowledge of the health production function may lead to inefficient household choices, and thereby to the production of suboptimal levels of health. This paper studies the effects of a cluster randomised intervention in rural Malawi which, over a six-month period, provided mothers of young infants with information on child nutrition without supplying any monetary or in-kind resources. A simple model first investigates theoretically how nutrition and other household choices including labour supply may change in response to the improved health knowledge observed in the intervention areas. We then show empirically that, in line with this model, the intervention improved household consumption, child nutrition and consequently health. These increases are funded by an increase in the labour supply of fathers. We consider and rule out alternative explanations behind these findings. Since the evaluation design has a small number of clusters, special attention is paid to the important issue of inference. We use two methods for inference - the wild bootstrap cluster-t method suggested by Cameron et al (2008) and randomisation inference – and show that both provide similar results. This paper is the first to establish that non-health choices, particularly parental labour supply, are affected by parents’ knowledge of the child health production function.

 

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