Author and "FamilyLife Today" radio host Dennis Rainey suggests four categories as useful in understanding current Protestant attitudes concerning birth control. These are the "children in abundance" group, such as Quiverfull adherents who view all birth control and natural family planning as wrong; the "children in managed abundance" group, which accept only natural family planning; the "children in moderation" group which accepts prudent use of a wide range of contraceptives; and, the "no children" group which sees itself as within their Biblical rights to define their lives around non-natal concerns.