Royal Skousen, professor of linguistics and English language at Brigham Young University, has been the editor of the Book of Mormon critical text project since 1988. Volumes 1, 2, and 4 of the critical text are published by the Foundation for Ancient Research and Mormon Studies. In 2009, Skousen published with Yale University Press the culmination of his critical text work, The Book of Mormon: The Earliest Text. He is also known for his work on exemplar-based theories of language and quantum computing of analogical modeling.