Sutter, Matthias Max Planck Institute for Research on Collective Goods, Max Planck Society;
https://doi.org/10.1016/j.econlet.2021.109925 (Any fulltext)
Bindra, P. C., Kerschbamer, R., Neururer, D., & Sutter, M. (2021). On the value of second opinions: A credence goods field experiment. Economics Letters, 205: 109925.