Dr. Cult wants to study people who join a secretive and extr…
Dr. Cult wants to study people who join a secretive and extremist religious group known as The Church of the Fiery Apocalypse. He first interviews a recently recruited member and asks the member for the names and phone numbers of 2 other people in the group that may be willing to participate in the study. He then interviews those 2 people, and asks each of them for the names and phone numbers of 2 other people in the group that may be willing to participate in the study. If Dr. Cult builds his sample in this manner, his study has used_____.