Ulrich J. Eberle, Vernon Henderson, Dominic Rohner, Kurt Schmidheiny, 09 July 2020

Urbanisation is a major driver of economic development. Agglomeration forces that make cities productive and dispersion forces that limit their growth have been extensively studied, but the effect of ethnolinguistic diversity has been largely overlooked. This column shows that more diverse regions tend to experience more social tensions and conflict, less urbanisation, less urban concentration, and hence potentially less economic growth. This effect is however more confined to intermediate political regimes like fragile democracies, whereas a mature degree of democracy helps to defuse the negative impact of diversity on urbanisation.

Simon Wren-Lewis, 05 July 2018

Hannes Mueller, Dominic Rohner, 22 January 2018

Power sharing has been proposed as a potential solution to political violence in ethnically or religiously diverse countries. Using data from the Troubles in Northern Ireland, this column shows that power sharing has significant and substantial effects in terms of curbing violence. These positive effects disappear when power sharing ends, however, implying that that political cooperation and inclusion need to be maintained in the long run if the benefits of lower violence are to continue.

Sandra McNally, Nina Guyon, Eric Maurin, 06 October 2011

In almost all countries, students are split up by ability at some stage in their education. This column looks at the effect of a change in policy in Northern Ireland that made entry into the elite group easier.

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