摘要:Informed consent is crucial in most research but written consent is not without its drawbacks. Written consent serves to protect the researcher more than it serves to protect the participant and this can present a barrier to their relationship. In certain circumstances it can undermine the trust important in research. For ‘simple’ studies, where treatments are largely interchangeable or where consent is implied, written consent can be considered not only to be unnecessary, but actually harmful. Research ethics committees should consider removing the requirement for written consent in these studies.