Yesterday, at a social event, one of us was chatting with another psychologist who remarked, "It is pretty incredible to be living in a period in which we get to observe the field undergo a historical transformation. " Their comment reflects a sentiment that many share-much has changed in how psychology is done and communicated during the last decade, perhaps more than in any other.The motivation for change, and the largely grassroots activism that has advanced change, was accelerated around 2011 with events that highlighted potential weaknesses in the credibility of published evidence and claims, as well as the processes, practices, and reward systems that shape the production of evidence and claims. New approaches emerged to improve the credibility of research. Have the changes been for the better? Do the new approaches and behaviors address the right problems? What problems are being missed? What new problems are being created?In 2021, ten years after the start of the "replication crisis" in psychology, we set out to collect a set of articles reflecting on the crisis and the ensuing "credibility revolution" or reform movement. The nine articles in this special topic provide a broad and varied perspective on this tumultuous decade.