A Poverty Trap of Crime and Unemployment

We present an overlapping generation growth model with an imperfect labor market where the links among crime, growth and unemployment are jointly considered, both in an endogenous and exogenous set‐up. We test the major implications of our theory and verify the two model specifications through the Italian regional data, using the Pooled Mean Group estimator proposed by Pesaran, Shin and Smith (1999 ). The empirical results are in favor of the exogenous version of the model and suggest that crime and unemployment have long‐run income level effects.     

Economic Growth,Technological Progress and Social Capital: The Inverted U Hypothesis

We set up a theoretical framework to analyse the role of economic growth and technological progress in the erosion of social capital. Under certain conditions on parameters, the relationship between technological progress and social capital can take the shape of an inverted U curve. Furthermore, we show the circumstances that allow the economy to follow trajectories where the stock of social capital grows endogenously and unboundedly.     

Simonsen and the early history of the cash\in-advance approach

The paper brings to light an early contribution to the cash-in-advance literature made by the Brazilian economist Mario Henrique Simonsen (1935–1997) in an article written in Portuguese as far back as 1964. Simonsen explicitly introduced the cash-in-advance constraint as an inequality in a non-linear programming problem and provided a diagrammatic illustration of the interior and boundary solutions. He also applied the concept to the discussion of the quantity theory of money and showed that the classical dichotomy is valid for the stationary equilibrium of prices over time.     

R&D Outsourcing and the Effectiveness of Intangible Investments: Is Proprietary Core Knowledge Walking out of the Door?

Intangible relationship‐specific investments can be double‐edged swords, as they facilitate not only the governance of business relationships but also undesired knowledge transfers. Building on transaction costs theory and the relational view of alliances, we analyse the effectiveness of these investments in R&D outsourcing agreements from the viewpoint of the client. We argue that, when outsourcing to business firms, the safeguards adopted by the clients to prevent spillovers may reduce the effectiveness of the supplier's specialized investments. Using original survey data from 170 European and US technology‐intensive firms, we find that the contribution of these investments to client performance decreases the more a client's core knowledge is required to perform the service, except when outsourcing to non‐profits. This suggests that as the appropriability hazards associated with outsourcing to business firms rise, the client is able to capture less value from the supplier's relationship‐specific investments.     

Patinkin,the Cowles Commission,and the theory of unemployment and aggregate supply

The paper provides an account of Don Patinkin's long-time search for an explanation of the notions of an aggregate demand constraint and unemployment under the assumption of a perfectly competitive goods market. It is argued that Patinkin's quest is reflected on the development of the concept of an aggregate supply function in the goods market. Patinkin's interpretation of aggregate supply and unemployment is compared to similar ideas put forward by Jacob Marschak, Trygve Haavelmo and Lawrence Klein, his former colleagues at the Cowles Commission in Chicago.     

Attitudes to risk and attitudes to uncertainty: experimental evidence

In a series of experiments the interactions among individual attitudes towards risk and uncertainty, the sign of the outcome domain, and the way uncertainty is represented are tested. This is done in a unified framework, eliciting individual values by means of a second price auction. Results confirm the presence of the well-known fourfold pattern of risk attitude (risk aversion for gains and risk seeking for losses at high probability, and risk seeking for gains and risk aversion for losses at low probability) and show that this pattern can also be extended to uncertainty. In the valuation of losses the modal pattern is decreasing risk and uncertainty aversion as the probability of loss increases, while increasing risk and uncertainty aversion is observed for gains. Moreover, it is found that the size of reaction to uncertainty does not depend on the outcome domain, and that it persists in the face of an incentive-compatible mechanism to elicit preferences.     

Schumpeter on unemployment

Joseph Alois Schumpeter’s approach to the phenomenon of unemployment differs strongly from the traditional classification with its strict distinctions between frictional, cyclical and structural unemployment. By relating these three categories to his theory of creative destruction, Schumpeter collapsed them all into one: technological unemployment. In our paper, we provide a systematic overview and discussion of Schumpeter’s varied writings on unemployment, from 1908 to 1954. We compare his view with the positions of some of his contemporaries, such as Wicksell, Hicks, Beveridge and Keynes. Finally, we discuss to what extent recent writers, such as Aghion, Howitt and Caballero, have integrated Schumpeter’s approach into modern macroeconomics.     

The Robertson connection between the natural rates of interest and unemployment

The paper explores the connection between the natural rates of unemployment and interest first put forward in the literature by Dennis Robertson in the 1930s. This looks at monetary dynamics in the business cycle and assesses the Robertsonian contribution to developments in macroeconomics before and after Keynes's General Theory. Robertson showed how unanticipated price level changes affect supply and demand in the labour market, as well as the saving–investment process in the credit market. Robertson's approach to economic policy was that of getting the relations right between cyclical changes in prices, output and employment and their long-run equilibrium values over time.     

A Simple Panel‐CADF Test for Unit Roots*

In this paper, we propose a simple extension to the panel case of the covariate‐augmented Dickey–Fuller (CADF) test for unit roots developed in Hansen (1995) . The panel test we propose is based on a P values combination approach that takes into account cross‐section dependence. We show that the test has good size properties and gives power gains with respect to other popular panel approaches. An empirical application is carried out for illustration purposes on international data to test the purchasing power parity (PPP) hypothesis.