To increase the number of pre-registered observational studies, Journal of Child Psychology and Psychiatry (JCPP) Advances is delighted to now invite Registered Reports. Registered Reports are a format of article in which the study protocol is pre-registered and peer-reviewed before the research is conducted. If the protocol is of high quality and the proposed research topic is important, JCPP Advances will commit to publishing the study regardless of the results. This article format crucially addresses publication bias, as decisions on publication are entirely independent of the results.