Research paper #35 provides a selective overview of the current state of research on the impact of microinsurance. Its key purpose is to explore the role played by insurance in developing countries. In reviewing the most recent literature about the impact of microinsurance in developing countries, special attention is given to the issue of statistical identification of the impact, and to the need of highlighting the channels through which microinsurance affects the outcomes. Although the effects of microinsurance are heterogeneous across the studies reviewed, this review shows that micro-insurance seems to achieve markedly positive results under specific provisions.