How do the justices of a nation's highest court arrive at their decisions? In the context of the US Supreme Court, the answer to this question is well established: justices seek to enshrine policy preferences in their decisions, but they do so in a manner consistent with 'the law' and in recognition that they are members of an institution with defined expectations and constraints. In other words, a justice's behaviour is a function of motives, means, and opportunities. Using Norway as a case study, this book shows that these forces are not peculiar to the decisional behaviour of American...