Reformed evangelicals do not have a reputation for being ecumenically inclined. The twentieth century saw Roman Catholics, largely as a result of Vatican II, turning their focus toward developing more receptive relationships with other Christian communions. It also saw mainline Protestants engaged in efforts to foster visible unity through the work of the World Council of Churches. Evangelicals, on the other hand, tended to focus their efforts on defending traditional doctrines, and conservative Reformed thinkers were concerned with defending their own particular confessional traditions. Whether hostile or indifferent to the ecumenical movement, Reformed evangelicals have not played a significant role in the search for organizational unity among Christian communions.