A’Hearn B. (2005) The not-so-mighty finance

October 16, 2009

A’Hearn, Brian (2005) Finance-led divergence in the regions of Italy. Financial History Review, 12/1: 7-41.


After the unification, the Italian South did not catch up with the North, on the contrary they engaged on a divergent path as the per capita income gap increased from 15-25% to 55% in the first 50 years (p.7). This continuing disparity may be explained by the sore state of the southern banks which could have been unable to support and finance local development (finance-led growth argument; p.9). However, initial evidence seems not to support this hypothesis, as the share of the Mezzogiorno in the banking activity of the country was in line with the relative economic weight of the region (p.10). Read the rest of this entry »

Dittmar J. (2008) The emergence of Zipf’s Law

April 2, 2009

Dittmar, Jeremiah (2008) “Cities, Institutions, and Growth: The Emergence of Zipf’s Law”, Job Market Paper.


This paper is available on line.


Zipf’s Law is a simple power law holding that the number of cities with population greater than N is proportionate to 1/N, this results in a log-linear relation between city population and city size rank (p.2). However, as shown by pre-modern European urban history, this law is not universal nor a-temporal (p.3). This outlying is very significant since economists have recognized that “there is an optimal level of urban concentration and that both over- and under- concentration can be very costly in terms of productivity growth” (p.4). When respecting the Zipf’s Law, city growth is considered random, so what prevented “normal” urban expansion and what later on made it possible? Read the rest of this entry »

North D.C. (1959) Agriculture and economic growth

March 20, 2009

North, Douglass C. (1959) “Agriculture and Regional Economic Growth”, Journal of Farm Economics, 41/5, 943-951.


“There seems to be agreement amongst economist that agriculture contributes little to economic growth”. Worse it may even delay development as agricultural comparative advantage may attract production factors away from the most moderns sectors of the economy. At best, progress in agriculture is seen as a consequence rather than a cause of urban and industrial development (p.943). But the author argues that “the successful production of agricultural (or indeed most extractive) commodities for sale [outside of] the region can be and under certain conditions has been the prime influence inducing economic growth […] and eventually industrial development”. Read the rest of this entry »