Legal realism is associated with American jurisprudence during the 1920s and 1930s, particularly amongst federal judges and lawyers within the Roosevelt administration. Notable jurists associated with legal realism include Felix Cohen, Morris Cohen, Arthur Corbin, Walter Wheeler Cook, Robert Hale, Wesley Hohfeld, Karl Llewellyn, Underhill Moore, Herman Oliphant and Warren Seavey, many of whom were associated with Yale Law School. As Keith Bybee argues, "legal realism exposed the role played by politics in judicial decision-making and, in doing so, called into question conventional efforts to anchor judicial power on a fixed, impartial foundation." Contemporary legal scholars working within the Law and Society tradition have expanded upon the foundations set by legal realism to postulate what has been referred to as new legal realism.