Canadian cities as regional engines of growth: agglomeration and amenities

Abstract.  Canadian regional population growth is less understood than that of the United States. In both countries, certain regions have persistent population growth. Yet, unlike U.S. trends of amenity-driven migration away from historic urban centres, Canadian growth is more urban centric. This study assesses whether agglomeration economies in the few major Canadian metropolitan areas lead to population growth in or near these cities rather than the more-dispersed U.S. patterns. The results suggest that disparities such as the concentration of Canadians along its southern border may explain migration patterns, indicating that key differences in initial conditions may produce different outcomes between the two countries.     

Comparative Advantage, Observability, and the Optimal Tax Treatment of Families with Children

Children are special, not only to their own parents, but also for society at large. Even if society is not directly interested in children, intervention may still be justified for re-distributive reasons. The fact that children are not transferable, while income is, does in fact bias the first best in favour of households with a comparative advantage in raising children. Furthermore, visibility makes children a natural target of second-best policies (but it does not necessarily follow that family size should be subsidized, at least directly). If society is directly interested in children, maybe only because of an externality, that is an additional reason for interfering with parental decisions.     

Wealth effects, the Taylor rule and the liquidity trap

This paper analyzes the dynamic properties of the Taylor rule with the zero lower bound on the nominal interest rate in an optimizing monetary model with overlapping generations à la Yaari–Blanchard–Weil. The main result is that the presence of wealth effects is not sufficient to rule out the possibility of infinite equilibrium paths with decelerating inflation. In particular, in the presence of wealth effects, the occurrence of liquidity traps is not avoided when the central bank implements a Taylor-type interest-rate feedback rule.     

Price elasticities and tax reform in Mexico

Price responses are usually estimated for the average household. However, different households are unlikely to respond in a similar way to movement in prices. Consequently, relying on averages may be misleading when examining the behaviour of a particular group of households such as the poor. This article uses six household surveys collected in Mexico between 1989 and 2000 to derive price responses for 10 product groups and for five levels of income households. The estimated price elasticities are then fed into a micro simulation model to measure the effect of a marginal tax reform. The results find that that poorer households tend to react substantially more to movement in prices, suggesting the usefulness of estimating elasticities that reflect the behavioural responses of the poor rather than of the entire population. The micro simulation results indicate that reducing the taxes on maize, alcoholic beverages and vegetables would be both more equitable and more efficient in terms of social welfare. Meanwhile, a reduction in the tax on legumes, sugar, and oils and fats, while inefficient, would contribute to reduce inequality.     

A Conceptual Regulatory Framework for the Design and Evaluation of Complex,Participative Cultural Planning Strategies

The current hype about culture‐led local development models is causing an increasing interest in cultural policies in the broader context of urban policy. This is not necessarily a transitory situation bound to fade once the hype is over. Under certain conditions, there is room to believe that culture may indeed become a main development driver of urban systems. For this to happen, however, it is necessary to abandon simple mono‐causal developmental schemes (such as the ‘creative class’ model) and look for more articulated approaches. This calls in turn for a complex systems‐based conceptual framework that is at the same time rich enough to capture the complexity of the interdependences among policy and state variables, and manageable enough to be of practical use, not only for policy design professionals but also for local stakeholders who want to take part in collective decision‐making processes. Inclusiveness and collective decision making are almost unavoidable in the case of cultural planning strategies, as the social sustainability of culture‐based value creation processes crucially depends on boosting the level of access to cultural opportunities by local residents. In this article we present an approach that may be a tentative first step in this direction.     

Profit‐maximizing behaviour replaces social sanctions in urban microcredit marketsThe case of Italian MAGs1

Poor local information networks and weak social sanctions in urban settings make joint liability unable to guarantee high repayment rates to microlenders. Yet, microcredit programmes in Western Europe report good performance even if the majority of them require no collateral. We collected data from three Italian microcredit institutions which operate in urban areas, granting individual loans without collateral to single entrepreneurs and teams (associations and cooperatives). We found that teams repay with higher probability. On this basis we developed a microlending instrument which, like joint liability implemented in rural economies, mitigates informational problems but, unlike joint liability, fits the urban context in that it reproduces a cohesion among entrepreneurs based on profit‐maximizing behaviour and not on social capital.     

Entropy martingale optimal transport and nonlinear pricing–hedging duality

The objective of this paper is to develop a duality between a novel entropy martingale optimal transport (EMOT) problem and an associated optimisation problem. In EMOT, we follow the approach taken in the entropy optimal transport (EOT) problem developed in Liero et al. (Invent. Math. 211:969–1117, 2018), but we add the constraint, typical of martingale optimal transport (MOT) theory, that the infimum of the cost functional is taken over martingale probability measures. In the associated problem, the objective functional, related via Fenchel conjugacy to the entropic term in EMOT, is no longer linear as in (martingale) optimal transport. This leads to a novel optimisation problem which also has a clear financial interpretation as a nonlinear subhedging problem. Our theory allows us to establish a nonlinear robust pricing–hedging duality which also covers a wide range of known robust results. We also focus on Wasserstein-induced penalisations and study how the duality is affected by variations in the penalty terms, with a special focus on the convergence of EMOT to the extreme case of MOT.