Social psychology has undergone a crisis in which concerns about replicability have cast a specter of radical doubt over widely reported findings in the field. This chapter uses the crisis in social psychology as a case study to articulate some of the challenges surrounding replication that bedevil efforts to improve replicability more broadly in the social sciences. It does so with an eye toward policy implications, but with the caveat that research heterogeneity means that there are no simple prescriptions applicable to all fields or research methods.