Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Studies show that identifying contributors increases contributions to public goods. In practice, viewing identifiable information is costly, which may discourage people from accessing it. We design a public goods experiment in which participants can pay to view information about identities and contributions of group members. We compare this to a treatment in which there is no identifiable information, and a treatment in which all contributors are identified. Our main findings are that: (i) contributions in the treatment with costly information are as high as those in the treatment with free information, (ii) participants rarely choose to view the information, and (iii) being a high contributor is correlated with choosing to view information about others.