Exposure to chemicals has been shown to reduce IQ in children. In turn, a person’s IQ is likely to affect their educational achievements, which may then affect lifetime earnings, more generally, a person’s quality of life. At the same time, authorities face challenges in regulating chemical...

We design and conduct a field experiment in which treated subjects receive a precise and objective signal regarding their knowledge about a public good before estimating their WTP for it. We find that the causal effect of objective signals about the accuracy of a subject׳s knowledge for a...