As far as programming is concerned, four of ABC's marquee shows of the 1970s ended their runs during the mid-1980s: Laverne & Shirley ended its run in 1983, Happy Days and Three's Company ended in 1984 (with the latter producing a short-lived spinoff that year), while The Love Boat ended its run in 1986. After nearly a decade of ratings trouble, NBC had regained the ratings lead among the Big Three networks in 1984 on the success of series such as The Cosby Show, Cheers and Miami Vice. To counteract NBC, ABC decided to refocus itself on comedies and family-oriented series beginning in the mid-1980s including Mr. Belvedere, Roseanne, Who's the Boss?, Just the Ten of Us, The Wonder Years, Full House and Perfect Strangers.
Which sitcom ended its broadcast run for ABC in 1983? Which sitcom produced a spinoff for ABC after ending its run in 1984? Which network regained the ratings lead in America in 1984? What comedy for ABC ended its broadcast run in 1986? ABC began to focus on what kind of series after NBC's success in 1984?