Peter B. Mortensen – författare

Policy change is important, and a very large number of actors and events contribute to a given policy change. The list of contributions includes government change, public opinion, public debate, lobbying, expert advice, events, and media coverage. Many of these contributing factors are interdependent, their effect on policy is variable, and their contributions are often difficult to observe. This resembles the features of a complex system, and it calls for an approach to the study of policy change that takes this complexity seriously. Understanding Policy Changes: The Mixture Model of Politics offers a new theoretical and methodological approach to the study of policy changes. The approach draws inspiration from research on physical systems such as earthquakes and waves, and it utilizes mathematics to improve the precision of the theoretical arguments and the empirical applications. Theoretically, the book develops a model of politics that explains policy changes as a function of variation in the number of contributions. Methodologically, the book presents the comparative distributional method as a statistical tool to analyse policy change. Using case studies, and data on public spending across a large number of countries and issues, the book demonstrates how the mixture model accounts for general patterns in the distributions of policy changes and how institutional differences, particularly democratic institutions, are associated with variation in these distributions.

Building on hundreds of thousands of systematically collected and content-coded local policy agenda observations, this book examines – theoretically and empirically - the policy agenda effects of four central aspects of any political system: the institutions that structure politics; the problems confronting the political system; the occurrence of regular and free elections; and the actors navigating the political system. Developing an explanatory model based on these four factors not only improves our understanding of the determinants of the local policy agenda but also contributes to a further integration of local government research, policy agendas research, and the broader discipline of political science. The book may be of particular interest to scholars and students of comparative politics, agenda setting, public policy, and local government.

Building on hundreds of thousands of systematically collected and content-coded local policy agenda observations, this book examines – theoretically and empirically - the policy agenda effects of four central aspects of any political system: the institutions that structure politics; the problems confronting the political system; the occurrence of regular and free elections; and the actors navigating the political system. Developing an explanatory model based on these four factors not only improves our understanding of the determinants of the local policy agenda but also contributes to a further integration of local government research, policy agendas research, and the broader discipline of political science. The book may be of particular interest to scholars and students of comparative politics, agenda setting, public policy, and local government.