Bringing Up Baby is a four-part British television documentary series which compares three different childcare methods for babies: the Truby King method (a strict, routine-based method popular in the 1950s), the Benjamin Spock approach (a more relaxed approach based on parents' instincts, popular in the 1960s), and the Continuum concept (in which babies are in constant contact with a parent at all times, based on tribal child-rearing methods and popular in the 1970s). Each method was advocated and administered by a nanny for two families each. The series was controversial when it aired on Channel 4 in 2007, particularly due to the actions recommended by Truby King advocate Claire Verity, and questions over Verity's qualifications.