RESEARCH BRIEF
Anne Karing
This study tests whether social signaling can positively influence parents’ vaccination decisions in Sierra Leone. Giving children color-coded bracelets that indicate their vaccination status increases parents’ belief in the visibility of their actions and their knowledge of other children’s vaccine status. The bracelets have no effect on vaccination decisions when their color corresponds to an easier-to-complete vaccine with low perceived benefits, and large, positive effects when their signal is linked to a costlier-to-achieve vaccine with high perceived benefits.
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