Attanasio, O; Krutikova, S; (2020) JEEA-FBBVA LECTURE 2019: Consumption Insurance in Networks with Asymmetric Information: Evidence from Tanzania. Journal of the European Economic Association , 18 (4) pp. 1589-1618. 10.1093/jeea/jvaa030.

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Abstract

This paper uses a dataset from Tanzania with information on consumption, income, and income shocks within and across family networks. Crucially and uniquely, it also contains data on the degree of information existing between each pair of households within family networks. We use these data to construct a novel measure of the quality of information both at the level of household pairs and at the level of the network. We also note that the individual level measures can be interpreted as measures of network centrality. We study risk sharing within these networks and explore whether the rejection of perfect risk sharing that we observe can be related to our measures of information quality. We show that households within family networks with better information are less vulnerable to idiosyncratic shocks. Furthermore, we show that more central households within networks are less vulnerable to idiosyncratic shocks. These results have important implications for the characterisation of the empirical failure of the perfect risk-sharing hypothesis and point to the importance of information frictions.

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