The calm before the storm: A punctuated equilibrium theory of international politics

Research has shown that policymaking in numerous domestic policies, across a multitude of polities, systematically produces a pattern of change that matches Punctuated Equilibrium Theory (PET), characterized by many incremental and occasional dramatic changes. The field of International Relations (IR), however, has paid surprisingly little attention to PET, even though the same pattern of change is also found in international politics. This study attempts to fill this gap and explains stability and change in international politics based on PET. Specifically, we detail the dynamics behind this pattern of behavior, both at the domestic and the international level, as well as their interplay. The empirical section shows that different indicators of international politics, including troop deployments, foreign aid and international trade, follow a leptokurtic pattern of change, which characterizes Punctuated Equilibrium, and whereby changes in countries' behavior are generally incremental, representing periods of relative stability, and punctuated by large changes that dramatically overthrow existing policies. Moreover, our results indicate that policy outputs where greater friction is at play are more punctuated than those policies that cannot as easily or directly be managed. This study urges future research to further explore the dynamics of stability and change at the aggregate, international level.     

Cultural and trade practices in Sincu Bara (Senegal): a multi-proxy investigation

The Sincu Bara site in Senegal is one of the most famous archeological sites in Western Africa. Here we present the results of a multi-proxy study that combined microscopic analyses, carbon content, stable carbon isotope (δ¹³C) and radiocarbon (¹⁴C) measurements. This investigation exhibits a chronological framework in two phases: from 400 yr AD to 650 yr AD and 650 yr AD to 900 yr AD. Furthermore, it shows that besides basic potteries, some potsherds are notable for a temper exclusively made with human-harvested C4 plants. Finally, the ¹⁴C analysis performed on the organic slip strongly indicates the use of bitumen or bitumen-derived products for red slip preparation. This suggests the establishment of trade relationships with Nigerian and/or Trans-Saharan populations as early as 400 yr AD.     

The Implications of Immigration Federalism for Non-citizens’ Rights and Immigration Opportunities: Canada and Australia Compared

This article explores the development of immigration federalism in Australia and Canada (expressed through the establishment of state/provincial/territorial immigrant selection programs) and its implications for immigrants’ rights and immigration opportunities. Given the very limited scholarship on the issue, and the lack of previous comparative studies on immigration federalism in Australia and Canada, our research is exploratory by nature. Our finding is that provincial/state/territorial programs offer some advantages to prospective applicants (such as increased immigration opportunities), but, at the same time, raise a number of concerns (such as an increased dependence on employers). As our study reveals, the costs and benefits of immigration opportunities under state/provincial/territorial programs differ for skilled and low-skilled workers, whereby the latter are given only limited access to permanent residence, and on more onerous conditions than skilled workers. Drawing on these findings, we identify areas in need of further research and policy response.