Regression Discontinuity Designs Based on Population Thresholds: Pitfalls and Solutions

In many countries, important features of municipal government (such as the electoral system, mayors' salaries, and the number of councillors) depend on whether the municipality is above or below arbitrary population thresholds. Several papers have used a regression discontinuity design (RDD) to measure the effects of these threshold‐based policies on political and economic outcomes. Using evidence from France, Germany, and Italy, we highlight two common pitfalls that arise in exploiting population‐based policies (compound treatment and sorting), and we provide guidance for detecting and addressing these pitfalls. Even when these problems are present, population‐threshold RDD may be the best available research design for studying the effects of certain policies and political institutions.     

Contending regionalisms: hubs and challengers in the Americas and the Asia-Pacific

As regions become more institutionalized, they are characterized by two competing trends. First, key regional institutions can become hub institutions that act as transmitters of a comprehensive set of norms. Second, as regional institutions increase in number, regions themselves are liable to become more fragmented. How these trends have played out is explored in two key regions, the Americas and the Asia-Pacific. It is concluded that regions are not static entities but are ever-changing structural arrangements. Hub institutions can be challenged and the consequences can be significant as regions gain in importance on the international stage.     

A tale of two ex-dominions: why the procedures for changing the rules of succession are so different in Canada and Australia

In 2011, the leaders of the nations that share Queen Elizabeth as their head of state agreed to change the rules governing the inheritance of the throne. The federal nature of the Canadian and Australian Crowns raises the question of whether Canadian provinces and Australian states should be involved in the process for modifying the rules of succession. Australia's federal government has decided to include its states in the process, whereas Canada's did not. This article will assess what the differences between these two approaches reveal about the political cultures and leaders of these nations. The issues discussed include relations between the civil service and elected politicians, the contested social memory of the British Empire, and the relationship between neoliberalism and cooperative federalism.     

Socio-economic differentiation and shea globalization in western Burkina Faso: integrating gender politics and agrarian change

In this paper, we examine the way a local manifestation of the globalization process, the boom in the shea trade in western Burkina Faso, has fueled socio-economic differentiation in shea activity as part of a wider differentiation process. We refer to the gender politics and agrarian change literatures to inform both within- and across-household mechanisms of differentiation. We analyze both the mechanisms of change and the resulting inequalities. Our results reveal the interplay between multiple drivers of change, and nuance the analysis of the winners and losers of globalization of shea activity.     

The ox fall down: path-breaking and technology treadmills in Indian cotton agriculture

ABSTRACT

Although India’s cotton sector has been penetrated by various input- and capital-intensive methods, penetration by herbicide has been largely stymied. In Telangana State, the main obstacle has been the practice of ‘double-lining’, in which cotton plants are spaced widely to allow weeding by ox-plow. Path dependency theory primarily explains the persistence of sub-optimal practices, but double-lining is an example of an advantageous path for cash-poor farmers. However, it is being actively undermined by parties intent on expanding herbicide markets and opening a niche for next-generation genetically modified cotton. We use the case to explicate the role of treadmills in technology ‘lock-in’. We also examine how an adaptive locked-in path may be broken by external interests, drawing on recent analyses of ‘didactic’ learning by farmers.