So-called impact studies are also relevant to the study of legal culture. These are studies of the ways in which decisions of the Supreme Court, or other courts, are received, used, followed, evaded, or flouted by the public, or some particular part of the public. Legal culture is not only the source of doctrine; it monitors the reaction to doctrine and to specific decisions of the courts. There is a sizeable literature, for example, on reactions to the Supreme Court's decisions barring prayers from public schools. In the broadest sense, much of the vast literature on the controversy over abortion or on school desegregation is impact literature and, hence, relevant to the role of legal culture in the constitutional system. But there has not been much success as yet in framing general theories about impact or about the role of legal culture in producing compliant or noncompliant behavior.