The role of agricultural cooperatives in sustaining the wheat diversity and productivity: the case of southern Italy

We hypothesize that institutions such as agricultural cooperatives influence regional levels of variety diversity through input supply, processing or marketing functions. This diversity can also affect yield, a partial measure of crop productivity. We test these hypotheses with data from southern Italy, a mega-diversity spot and centre of diversity for durum wheat. Cooperatives in the southern regions of Italy process farmers’ harvests of durum wheat into bread, label it, and sell it locally. In this relatively marginalized region of the country, cooperatives enable farmers to capture more of the value of the final product and reduce marketing costs. To test the hypothesis, we apply a two-stage estimation approach with a Cobb-Douglas production function and panel data analysis. Findings suggest that the density of cooperatives in a region is associated with greater spatial diversity in wheat varieties grown, and that, over a 14-year period, this diversity positively affected crop yields.     

Environment, human development and economic growth

Over the last few years, environmental issues have entered into policy design, particularly development and growth policies. Natural resources are considered necessary production inputs and environmental quality is considered a welfare determinant. The integration of environmental issues into economic growth and development theories and empirics is currently widely analyzed in the literature. The effects of natural resources endowment on economic growth are mainly analyzed through the so-called Resource Curse Hypothesis (RCH) whereas the effects of economic growth on environmental quality are part of the Environmental Kuznets Curve (EKC). Furthermore, recent contributions on RCH and EKC have shown the important role of institutions and human development dimensions in building a sustainable development path. In this paper, we attempt to analyze the causal relationships between economic growth, human development and sustainability combining the RCH and EKC models and adopting a human development perspective. Results confirm the importance of high institutional quality and investments for human capital accumulation in order to build a sustainable development path.     

Dutch disease revisited. Oil discoveries and movements of the real exchange rate when manufacturing is resource-intensive

We study how natural resource booms affect the real exchange rate in a situation where there are input–output linkages between the manufacturing sector and the natural resource sector. An increase in revenues from natural resources could de-industrialize an economy by raising the real exchange rate, rendering the manufacturing sector less competitive. This tendency towards de-industrialization has been called “Dutch disease”. We build a theoretical model showing that a country experiencing discoveries of natural resources, such as oil, is not necessarily bound to experience the Dutch disease. The appreciation of the real exchange rate can be escaped if patterns of specialization shift towards the manufacturing industries that use oil more intensively. In the second part of the paper, we test the model and find support for the claim that Dutch disease effect associated with discoveries of natural resources (namely oil) are dampened in countries that specialize in resource-intensive manufacturing industries.     

Peer effects and the choice of adaptation strategies

This paper analyzes the impact of peer choices on the decision to adapt to climate change in rural Ethiopia. Two IVs are employed (peer-of-peer choices and peer-of-peer information sources) in order to tackle the issue of endogeneity. Through the use of a 3-year panel of farmers in the Nile Basin region, we find that peer choices positively affect the uptake of different adaptation strategies. A 10 percentage point increase in the share of peers using a specific strategy translates to an increase in the likelihood of adaptation between approximately 7% and 14%. This emphasizes the importance of social networks to achieve adaptation to climate change in sub-Saharan Africa.     

A theoretical and empirical evaluation and extension of the Todaro migration model

"This paper postulates that it is theoretically and empirically preferable to base internal labor migration on the relative difference in rural-urban real income streams and rates of unemployment, taken as separate and independent variables, rather than on the difference in the expected real income streams as postulated by the very influential and often quoted Todaro model. The paper goes on to specify several important ways of extending the resulting migration model and improving its empirical performance." The analysis is based on Italian data.     

An Experimental Investigation of Emotions and Reasoning in the Trolley Problem

Elaborating on the notions that humans possess different modalities of decision-making and that these are often influenced by moral considerations, we conducted an experimental investigation of the Trolley Problem. We presented the participants with two standard scenarios (‹lever’ and ‹stranger’) either in the usual or in reversed order. We observe that responses to the lever scenario, which result from (moral) reasoning, are affected by our manipulation; whereas responses to the stranger scenario, triggered by moral emotions, are unaffected. Furthermore, when asked to express general moral opinions on the themes of the Trolley Problem, about half of the participants reveal some inconsistency with the responses they had previously given.     

Economic Change,Subjective Perception and Institutional Evolution

Following Hayek's intuitions on the role of subjective perception in economics, I attempt to integrate path‐dependent dynamics in evolutionary economics, as emerging in the recent theorizing about economic change. The starting point is an open question in evolutionary economics: is there a unifying principle which characterizes change at individual, organizational and institutional levels? In the attempt to answer this question, I propose some considerations on the nature of learning processes and on the mechanisms of adjustment, discovery and selection that are consistent with cognitive psychology and contemporary neurobiology. In particular, I link imperfect perception to guided variations, like those contained in Dosi's technological paradigms. More generally, I attempt to integrate the evolutionary theory as conceived by Nelson and Winter with the evolutionary theory as conceived by Hayek.