This listing reflects the origin of what has arguably been the most widely accepted concept of the policy sciences, that is, the policy process,the procedure by which a given policy is proposed, examined, carried out, and perhaps terminated. Later, one of Lasswell’s students at Yale University, Garry I Brower, proposed a derivative list that has shaped much of the research agenda undertaken by policy scientists since the mid-1970s, in both substantive and practical terms :