Within comparative politics there are two main approaches to the impact of economic change on national policy patterns. The first, new institutionalism has been very influential in comparative industrial relations. The second, which focuses on the role of interests, has also been significant in New Zealand and Australian politics.
The concept of institutionalism is central to the analysis of the reform episode that took place in New Zealand. Institutions are the rules of the game in a society or, more formally, are the humanly devised constraints that shape human interaction (North,1990:3). Zucker defines Institutionalism as a fundamentally cognitive process (1983:25). In comparison, Immergut argues that the theoretical core of the new institutionalism is the view that there is a tendency for certain arrangements in social life to persist over institutions and for these institutional arrangements to affect not just strategic actions