 These three strands may be differentiated in a number of ways. First, each strand makes different motivational assumptions about public officials. Policy analysis generally assumes that public officials in general, and judges in particular, are conscientious. Judges thus enforce the legal rules as they are announced, regardless of the judge’s own view of the desirability of the legal rule or its impact on her personally. Political economy assumes that public officials have the same motivation as private individuals; they are self-interested (or subject to the same biases that private individuals are). In the context of adjudication, as will be elaborated below, the political economist interprets self-interested judicial behavior as decisions that promote the policy preferences of the judge. Doctrinal analysis does not analyze the behavior of public officials; it rationalizes the decisions of judges without necessarily imputing motivations to them.