Catholicism has always recognized the need for a normative doctrinal teaching authority. Yet the character, scope, and exercise of that authority, what has come to be called the magisterium, has changed significantly over two millennia. This book gathers contributions from leading Catholic scholars in considering new factors that must be taken into account as we consider the church's official teaching authority in todays postmodern context. Noted experts in their fields cover many intriguing topics here, including the investigation of theologians that has occurred in recent years, canonical perspectives on such investigations, the role that women religious have played in these issues, the place of the media when problems arise, and possible future ways forward. The book concludes with The Elizabeth Johnson Dossier, a selection of documents essential to understanding the case of Elizabeth Johnson, CSJ, whose work was recently the subject of severe criticism by the United States Conference of Catholic Bishops.