Few institutions in the world are credited with initiating and confounding political change on the scale of the United States Supreme Court. The Court is uniquely positioned to enhance or inhibit political reform, enshrine or dismantle social inequalities, and expand or suppress individual rights. Yet despite claims of victory from judicial activists and complaints of undemocratic lawmaking from the Court's critics, numerous studies of the Court assert that it wields little real power. This book examines the nature of Supreme Court power by identifying conditions under which the Court is successful at altering the behavior of state and private actors. Employing a series of longitudinal studies that use quantitative measures of behavior outcomes across a wide range of issue areas, it develops and supports a new theory of Supreme Court power.

The most sophisticated theories of judicial behavior depict judges as rational actors who strategically pursue multiple goals when making decisions. However, these accounts tend to disregard the possibility that judges have heterogeneous goal preferences - that is, that different judges want different things. Integrating insights from personality psychology and economics, this book proposes a new theory of judicial behavior in which judges strategically pursue multiple goals, but their personality traits determine the relative importance of those goals. This theory is tested by analyzing the behavior of justices who served on the US Supreme Court between 1946 and 2015. Using recent advances in text-based personality measurement, Hall evaluates the influence of the 'big five' personality traits on the justices' behavior during each stage of the Court's decision-making process. What Justices Want shows that personality traits directly affect the justices' choices and moderate the influence of goal-related situational factors on justices' behavior.

Few institutions in the world are credited with initiating and confounding political change on the scale of the United States Supreme Court. The Court is uniquely positioned to enhance or inhibit political reform, enshrine or dismantle social inequalities, and expand or suppress individual rights. Yet despite claims of victory from judicial activists and complaints of undemocratic lawmaking from the Court's critics, numerous studies of the Court assert that it wields little real power. This book examines the nature of Supreme Court power by identifying conditions under which the Court is successful at altering the behavior of state and private actors. Employing a series of longitudinal studies that use quantitative measures of behavior outcomes across a wide range of issue areas, it develops and supports a new theory of Supreme Court power.