Existence of solutions in continuous-time optimal growth models

This paper studies the existence of solutions in continuous time optimization problems. It provides a theorem whose conditions can be easily checked in most models of the optimal growth theory, including those with increasing returns and multi-sector economies.      

Politique du logement et lutte de classes au Chili (1970-75)*

To analyse the historical evolution of the building sector in Chile, and the way in which it reflects and affects the social structure as a whole, it is necessary to consider two aspects:

• 1 the building sector, considered as a specific part of the production sphere, a specific system of economic and social interests;
• 2 the building front, where the social practices of the conflicting forces express the needs of the reproduction of the labour force, and the class struggle in the building sector, opposed to speculation and capital accumulation processes.

Before 1970, the capital interests were dominant, strongly organized through the Chilean Building Chamber and its influence on government policy-making, and linked with US imperialism, particularly at the finance level. With the Popular Unity Government, a series of measures expressed the shift to the dominant interests of the working class: nationalization of the main private banks; control of the housing market; organization, control and partial socialization of the building industry; breaking of urban segregation patterns; national agreement on wages policy. The construction front was affected by new forms of class struggle: construction brigades, unemployed brigades, popular planning and, at the same time, new forms of economic and political retaliation by capital. This led first to the employers' strike and then, through the constitution of a capitalist class bloc supported by imperialism, to the coup d'etat, which restored the fullest opportunity for exploitation, speculation, segregation, and the power of the Chilean Building Chamber.     

Non‐additivity in Accounting Valuation: Theory and Applications

This paper has three objectives. First, to introduce a theoretical solution to the issue of non‐additivity between assets in place, relying on an accounting‐based valuation approach. Second, to explain how such an approach can be implemented empirically by measuring synergies between assets. Third, to present the properties of this non‐additive valuation technique. We use Choquet capacities, that is, non‐additive aggregation operators, to measure the interactions between assets and apply our methodology to a sample of US firms from the capital goods industry. To operationalize our approach we examine the relationships between synergies—captured by Choquet capacities—and the market‐to‐book ratio (proxying for growth options), and show how interactions between assets are consistently linked to a firm’s market‐to‐book ratio. We also measure firm‐specific productive efficiency relative to the industry and firm size. For large firms, efficiency, as defined by our approach, is positively associated with higher future operating cash flows. For small firms, efficiency is positively associated with higher future sales growth. We document that the non‐additive approach appears to be better able to identify expected relationships between efficiency and future performance than a simpler approach based on the market‐to‐book ratio.     

A panel data robust instrumental variable approach: a test of the new Fama-French five-factor model

Fama and French (FF, 2015) propose a new five-factor asset pricing model that adds profitability and investment patterns to the market, size and value variables used in FF (1992). Our purpose is to investigate this new model using an improved generalized method of moments (GMM)-based robust instrumental variables technique in a fixed-effects panel data framework. To test for measurement errors, we use a modified Hausman artificial regression. We also examine an augmented FF six-factor model that includes the Pástor–Stambaugh (PS, 2003) liquidity factor. Using the FF dataset, our GMM-based panel data approach leads us to conclude that the only consistently significant factor is the market factor.     

QUANTIFYING THE LAFFER CURVE ON THE CONTINUED ACTIVITY TAX IN A DYNASTIC FRAMEWORK*

It is argued that the tax on continued activity should be removed by implementing actuarially fair schemes. However, these schemes cannot fund the expected Social Security (SS) deficit. This article proposes to give individuals a fraction of the actuarially fair incentives in the case of postponed retirement. SS faces a trade‐off between giving enough incentives to make individuals delay retirement and giving little increase in pensions in order to help finance its expected deficit. This trade‐off is captured by a Laffer curve. Finally, when the SS system aims to maximize welfare, the optimal tax on postponed retirement is still strictly positive.     

Screening risk-averse agents under moral hazard: single-crossing and the CARA case

Principal-agent models of moral hazard have been developed under the assumption that the principal knows the agent's risk-aversion. This paper extends the moral hazard model to the case when the agent's risk-aversion is his private information, so that the model also exhibits adverse selection. We characterize the optimal menu of contracts; while its detailed properties depend on the setting, we show that some of them must hold for all environments. In particular, the power of incentives always decreases with risk-aversion. We also characterize the relationship between the outside option and the optimal contracts. We then apply our results to testing for asymmetric information in insurance markets.The authors thank P.A. Chiappori, D. de Mezza, R. Myerson, C. Prendergast, the late S. Rosen, D. Webb and an anonymous referee for helpful discussions or comments, as well as seminar participants in Berkeley, Chicago, Montré al, Northwestern, Rome, Stanford and Wisconsin. Bruno Jullien gratefully acknowledges financial support from the Fédération Francaise des Sociétés d'Assurance; Bernard Salanié thanks the University of Chicago for its hospitality.     

Optimal financial crises: A note on Allen and Gale

This note provides an example of an optimal banking panic. We construct a model in which a banking panic is triggered by the banker, not the depositors. When the banker receives a pessimistic information on the return on the bank’s assets, he liquidates them prematurely in order to protect his capital. In the face of this liquidation, all depositors withdraw their funds prematurely. The premature liquidation of the bank’s assets strengthens the bank’s balance sheet. As a result, the banking panic does not cause bank failure and the government should not try to prevent the panic. Such a panic occured in 1857 in the United States. JEL Classification G21     

Yet another look at Léon Walras's theory of tâtonnement

Starting with a detailed discussion of the theorem of equivalent redistributions, Part 1 examines the central role played by the distributional neutrality of tâtonnement in Walras's pure theory of exchange. Part 2 extends this discussion to Walras's attempts at reaching a similar result when dealing with the successive versions of his theory of production before 1900. Part 3 contrasts Walras's and Edgeworth's respective technologies of exchange in order to demonstrate that a distributionally neutral tâtonnement is an intrinsic part of Walras's theory of exchange. Finally, and besides briefly summarizing the results, the conclusion develops the crucial connection between the necessity of a converging and distributionally neutral tâtonnement in pure economics with Walras's theories of property and justice.     

Longitudinal evidence on financial expectations in Albania

This article focuses on the effect of remittances on financial expectations in Albania using longitudinal data covering the period 2002–2004. To study the dynamics of income satisfaction at the household level, we use subjective data on past, current and future financial situations and estimate random and fixed effect ordered Probit models. We find that households are more optimistic about the future when they have experienced an improvement in their financial situation in the past and when they have received private transfers from foreign countries.     

Multi‐Level Efficacy Evidence of a Combined Interprofessional Collaboration and Project Management Training Program for Healthcare Project Teams

Project work is essential for the improvement of healthcare organizations; yet, project management and collaboration in the project context are not taught to healthcare professionals. Three half‐day training workshops integrating project management and collaboration were designed and delivered to 14 interprofessional healthcare project teams. Multivariate measures were taken over the course of 36 weeks. Individual, team, and project‐level results showed high satisfaction and perceptions of utility; improved self‐efficacy for project‐specific task work and teamwork; increased goal clarity and coordination; and a significant impact on the functional performance of projects. This study provides initial benchmark measures regarding the pertinence of project management and interprofessional collaboration training for healthcare project teams.