Research Ethics Boards (REBs) at universities are chaired and staffed by researchers who serve to enforce codes of ethics by scrutinizing research proposals. Yet there is widespread dissatisfaction with the REB approval process. This article examines the sources of that dissatisfaction, the place for codes of ethics in the conducting of research, the evidence for risk to research participants as the basis for those codes, and the effectiveness of REBs in protecting research participants. We offer suggestions for how REB chairs, (...) members, and researchers can improve the REB approval process so that it is fair and responsive. (shrink)