Historic Adventism is an informal designation for conservative individuals and organizations affiliated with the Seventh-day Adventist Church who seek to preserve certain traditional beliefs and practices of the church. They feel that the church leadership has shifted or departed from key doctrinal "pillars" ever since the middle of the 20th century. Specifically, they point to the publication in 1957 of a book entitled "Seventh-day Adventists Answer Questions on Doctrine"; which they feel undermines historic Adventist theology in favor of theology more compatible with evangelicalism.