Psychological Meaning of Products and Product Positioning

New product positioning is an issue increasingly being considered by new products managers. An article on this topic by Crawford appeared in this Journal in 1985. Roberto Friedmann and Parker Lessig employ the concept of psychological meaning of products to discuss why and how Crawford's new product positioning typology affects the consumer. They present arguments to show that the psychological meaning of products and Crawford's typology address product positioning from complementary and converging perspectives. They also argue that psychological meaning of products can be a valuable managerial planning tool.     

Exploitation and time

This paper analyses exploitation and class formation in a dynamic context. An intertemporal model of a subsistence economy is set up and, among other results, it is proved that, in an interior equilibrium, Differential Ownership of (Scarce) Productive Assets is an inherent feature of a capitalist economy, while exploitation tends to disappear in the long run. Asset inequality is therefore proved to be a normatively secondary (though causally primary) wrong. It is also argued that these results raise several doubts about the possibility of providing robust micro-foundations to Marxian concepts by means of Walrasian general equilibrium models.     

Do overweight and obesity prevalence rates converge in Europe?

We exploit recently published data to evaluate the long-run evolution of overweight and obesity rates among European economies between 1975 and 2016. We find that overweight rates for both females and males converge in Europe. In particular, the convergence is driven by the nations in the EU. This fact is consistent with food patterns as well as trade, agricultural, and health policies that are common among EU members. Across our model specifications, the steady-state average overweight rate ranges between 60% and 77% for European female individuals and lies above 82% for their male counterparts. Confidence intervals suggest that such gender differences are statistically significant. In the EU, the point estimates of these rates are 62% and 91%, respectively. Obesity prevalence in Europe would reach long-term rates of 39% and 45% for females and males respectively, whereas these rates would be similar in the EU (approximately 28%).     

How Should the Allocation of Resources Adjust to the Baby Bust?

We analyze the impact of a drop in fertility on the optimal allocation of resources in an overlapping generations economy where old workers care about leisure. We also characterize optimal dynamics and study the decentralization of the optimum by means of inter‐generational transfers and/or public debt. We conclude that the policy recommendations of postponing retirement is fragile and depend on preferences and technologies. Also, even when the optimal adjustment of public debt goes into the expected direction in the long run—i.e., public debt should decrease—this may not be the case during the transition.     

Threshold bipower variation and the impact of jumps on volatility forecasting

This study reconsiders the role of jumps for volatility forecasting by showing that jumps have a positive and mostly significant impact on future volatility. This result becomes apparent once volatility is separated into its continuous and discontinuous components using estimators which are not only consistent, but also scarcely plagued by small sample bias. With the aim of achieving this, we introduce the concept of threshold bipower variation, which is based on the joint use of bipower variation and threshold estimation. We show that its generalization (threshold multipower variation) admits a feasible central limit theorem in the presence of jumps and provides less biased estimates, with respect to the standard multipower variation, of the continuous quadratic variation in finite samples. We further provide a new test for jump detection which has substantially more power than tests based on multipower variation. Empirical analysis (on the S&P500 index, individual stocks and US bond yields) shows that the proposed techniques improve significantly the accuracy of volatility forecasts especially in periods following the occurrence of a jump.     

Incubation matters: Measuring the effect of business incubators on the innovation performance of start‐ups

This article explores the role of business incubators on the innovation performance of start‐ups; in addition, we also investigate how the incubation effect moderates other important factors driving their innovation performance. The empirical evidence comes from a sample of firms located in Northern Italy belonging to the manufacturing (mechanical engineering firms) and service sectors (knowledge‐intensive business services). The results suggest that the incubation effect is very important in shaping the innovation performance of new ventures (measured as a percentage of sales of new‐to‐market innovations). Moreover, it positively moderates the impact of (1) the internal technical capabilities and (2) the adoption of a limited portfolio of collaborations for innovation.     

Restaurant Prices and the Mexican Peso

Of prime interest to border economies is exchange rate performance and currency valuation. Commonly used tools for this task include purchasing power parity (PPP) nominal benchmarks, and inflation-adjusted trade-weighted indices. The latter have the advantage of relying on commonly available international macroeconomic data but overlook microeeonomic information that may offer additional insight to issues surrounding exchange rate policy debates. Other efforts have utilized small samples of international product price comparisons to shed light on currency valuation questions. This paper develops one such tool by repeated sampling of prices charged for identical menu items sold at restaurant franchises in El Paso, Texas, and Ciudad Juárez, Chihuahua. A battery of statistical tests indicate that the international currency value of the peso consistently differed from the exchange rate implied by the border region restaurant price ratios in 1997, 1998, and 1999.     

Imperfect Competition in Auction Designs

We study the competition between two owners of identical goods who wish to sell them to a pool of potential buyers. The sellers compete simultaneously setting reserve prices for their second price sealed bid auctions. Upon observing the set reserve prices, the buyers decide simultaneously in which auction to bid. We show that this game has (at least) one equilibrium and that all equilibria are inefficient: reserve prices are not driven to zero (cost). We also discuss where and why the parallel between optimal auction design and optimal pricing in the case of monopoly breaks down for oligopoly.