Firms' Cost Functions: A Reconstruction

Three empirical stylized facts characterize afirm's cost functions: AVC is generallyhorizontal; scale economies are often important;and capital usage (as well as labor usage)varies with the rate of output. In contrast ourstandard theory of diminishing marginalproducts, variable proportions, and U-shapedunit cost curves does not adequately reflectthese stylized facts of industrial reality. Explicit distinction between capital stocks andcapital flows allows a remodeling of a firm'scost curves to conform with these empirical facts.     

The Firm Size Distribution and Inter-Industry Diversification

We show that the stylized facts of the Firm Size Distribution (FSD) by age cohorts, as shown in Cabral and Mata (2003), bind within 4-digit manufacturing industries in the UK and Belgium. This paper investigates whether the time to build a portfolio of products from inter-industry diversification is a mechanism that helps explain the stylized facts of the FSD by age cohorts. We find that the degree of inter-industry diversification has a separate impact on firm size when controlling for age, amongst other factors. Using the techniques of Cabral and Mata, we find that inter-industry diversification does shift the FSD to the right, and more so in older age groups.     

Mortgage Choice†

Mortgage choice refers to a set of problems faced by a homeowner that includes the choice of a loan-to-value ratio, the refinancing and default decisions, and the choice of mortgage instrument. This paper reviews much of the literature that has been written on the topic. It begins with a listing of the major stylized facts the literature seeks to explain. Models used to explain mortgage choice are categorized and discussed. It is argued that the relatively simple certainty model that incorporates liquidity constraints seems capable of explaining some of the stylized facts, but is unable to explain some others. The paper concludes with a discussion of three policy questions that require a better understanding of mortgage choice before they can be answered. The paper is based upon the author's Presidential Address to the American Real Estate and Urban Economics Association, which was delivered in Atlanta, Georgia on December 29, 1989.     

Agriculture in Africa – Telling myths from facts: A synthesis

Stylized facts drive research agendas and policy debates. Yet robust stylized facts are hard to come by, and when available, often outdated. The 12 papers in this Special Issue revisit conventional wisdom on African agriculture and its farmers’ livelihoods using nationally representative surveys from the Living Standards Measurement Study-Integrated Surveys on Agriculture Initiative in six African countries. At times they simply confirm our common understanding of the topic. But they also throw up a number of surprises, redirecting policy debates while fine-tuning others. Overall, the project calls for more attention to checking and updating our common wisdom. This requires nationally representative data, and sufficient incentives among researchers and policymakers alike. Without well-grounded stylized facts, they can easily be profoundly misguided.     

What do we know about entry?

This paper is a brief survey of recent empirical work on entry. It is organized as a series of stylized facts and a series of stylized results which together summarize much of what is generally understood - or believed - about what drives entry, and about the effects that entry has on markets.     

An Applied Econometrician's View of Large Company Performance

This paper contains a brief survey of recent empirical work on the performance of large companies. It tries to pull together the literature in the form of six stylized facts, illustrating them with data drawn from a single sample. The paper concludes by highlighting the issues which are thrown up for future work. These are: accounting for persistent heterogeneities between firms, accounting for the apparently erratic performance of many firms and, finally, moving away from hypothesis testing driven empirical agendas.     

„Bewertung von physischen Übertragungsrechten — Eine Analyse der Grenzkuppelstellen zwischen Deutschland und den Niederlanden“

The purpose of this paper is to discuss market-coherent valuation of physical transmission rights for cross-border capacities between Germany and the Netherlands. Aiming at a fair valuation of these contracts, the most important stylized facts of electricity prices such as mean reversion, spikes and correlations of regional prices have to be considered. We present two different approaches to the valuation of physical transmission rights and perform a quantitative analysis of the results. On the one hand various challenges of modeling regional price differences are discussed. On the other hand a structural undervaluation of required flexibility is indicated, which implicates missing incentives for the extension of cross border capacities.     

The Performance of US Corporations: 1981–1994

This study decomposes the performance of US public firms between 1981 and 1994 into year, industry, corporate-focus and firm effects. Performance is measured by Tobin’s q, accounting profitability, and a hybrid measure. The results show that firm effects were more important to performance than industry effects, although industry effects had a large permanent component. Corporate focus was not important. The stylized facts suggest that competitive advantages – that is, differences between direct competitors in the same industry – were at least as important as industry influences on performance. Industry influences were more predictable and sustainable than competitive advantages, however.     

The Nature and the Determinants of Labor Market Transitions in Former Socialist Economies: Evidence from Bulgaria

To generate stylized facts on transitions between different labor market states during early transition, panel data for a sample of the registered unemployed in Bulgaria were collected. We find that about 60 percent of the unemployed are long-term unemployed. From logit regressions we find that women who had higher education and had not received unemployment benefits are more likely to be reemployed. For men, these factors are not significant, although participation in a training program is significant.     

“Which side are you on?” A historical study of union membership composition in seven Western countries

This study uses surveys from the past 60 years to study union membership in Denmark, France, West Germany, Italy, Sweden, the United Kingdom, and the United States. We first revisit aggregate union densities finding that, for France and Italy, they were at times under- and overestimated, respectively. Second, we document the evolution of the composition of union membership in terms of gender, occupation, education, and sector. Different stylized facts emerge for different groups of countries. These facts do not lend support to the composition-based theory that attributes deunionization to deindustrialization, nor to the technological theory that predicts the exit of the high-skilled from unions.     

Search Frictions in Many-to-one Markets*

This article studies how search frictions affect competition and matching efficiency in many-to-one loan markets where a borrower requires support from multiple investors and coordination is desired but absent. We develop a dynamic search model and show that borrowers employ mixed strategies in quoting interest rates. More importantly, we find that in many-to-one markets, the rate dispersion caused by search frictions facilitates coordination and hence improves allocation efficiency relative to a no friction environment. Further, we empirically present stylized facts consistent with the theoretical predictions and structurally estimate the impact of search frictions on matching efficiency.     

House Prices and Rents: Microevidence from a Matched Data Set in Central London

I analyze a real estate agency's proprietary dataset containing tens of thousands of housing sale and rental transactions in Central London during the 2006–2012 period. I isolate 1,922 properties that were both sold and rented out within six months and measure their rent‐price ratios. I find that rent‐price ratios are lower for bigger and more central units. These stylized facts are consistent with the user cost formula and reflect differences in maintenance costs, vacancy rates, growth expectations and risk premia.     

Credit rating industry: A helicopter tour of stylized facts and recent theories

The recent subprime crisis and the ongoing Euro zone crisis have generated an enormous interest in the credit rating industry not only among economists but also among average citizens. As a consequence, we have seen an explosion of the economic literature on the industry. The objective of this survey is to introduce readers to the key stylized facts of the credit rating industry and to the recent theoretical economic literature on this industry.     

Small forces and large firms: Foundations of the RBV

The article presents a synthesis of several papers I have written, mostly in the economics literature, since the publication of ‘A resource‐based view of the firm’ (Wernerfelt, 1984). The starting point is a very small force: the reduction in bargaining costs when several bargains are pooled into one. I show how one can construct a theory of the firm based on this force and defend the theory by arguing that it makes predictions consistent with several stylized facts. In addition, the theory suggests that firms should decide on their strategy and scope based on excess capacity of productive resources—exactly like the RBV.     

Business cycle stylized facts and inventory behaviour: New evidence for the Euro area

The purpose of this paper is for the first time to use Business Tendency Survey data, first, to identify new facts that are useful for the interpretation of the decline in the volatility of real activity in the Euro area, and, second, to test the inventory management hypothesis as an explanation for the Great Moderation in Europe. We present stylized facts from the Business Tendency data on series for inventories, current production, current orders, and expected production for the Euro area, emphasizing the decline in the volatility of the series. Further, we investigate whether the decline in inventory volatility can be attributed to an endogenous change in the persistence of shocks to the accumulation dynamics of inventories or to an exogenous change in the shocks hitting the inventory optimisation process. Our results at Euro level generally indicate that there is no evidence of a break in the inventory accumulation process. On the contrary, the impact of exogenous shocks on inventory volatility appears to be steadily declining over time, beginning from the mid-1980s.     

First foods: Diet quality among infants aged 6–23 months in 42 countries

Diet quality is closely linked to child growth and development, especially among infants aged 6–23 months who need to complement breastmilk with the gradual introduction of nutrient-rich solid foods. This paper links Demographic and Health Survey data on infant feeding to household and environmental factors for 76,641 children in 42 low- and middle-income countries surveyed in 2006–2013, providing novel stylized facts about diets in early childhood. Multivariate regressions examine the associations of household socioeconomic characteristics and community level indicators of climate and infrastructure with dietary diversity scores (DDS). Results show strong support for an infant-feeding version of Bennett's Law, as wealthier households introduce more diverse foods at earlier ages, with additional positive effects of parental education, local infrastructure and more temperate agro-climatic conditions. Associations with consumption of specific nutrient-dense foods are less consistent. Our findings imply that while income growth is indeed an important driver of diversification, there are strong grounds to also invest heavily in women’s education and food environments to improve diet quality, while addressing the impacts of climate change on livelihoods and food systems. These results reveal systematic patterns in how first foods vary across developing countries, pointing to new opportunities for research towards nutrition-smart policies to improve children’s diets.     

SCREENING AND MERGER ACTIVITY*

In our paper, the target of a proposed merger, by setting a reserve price, is able to screen prospective acquirers according to their (expected) ability to generate merger‐specific synergies. Both empirical evidence and many merger models suggest that the difference between high and low‐synergy mergers becomes smaller during booms. Thus, a target's opportunity cost for sorting out relatively less fitting acquirers increases and, hence, targets screen less tightly during booms, which leads to a hike in merger activity. Our screening mechanism not only predicts that merger activity is intense during booms and subdued during recessions but is also consistent with other stylized facts about takeovers and generates novel testable predictions.     

Comparative statics for real options on oil: What stylized facts?

An important application in the real options literature has been in investments in the oil sector. Two commonly applied “stylized facts” in such applications are tested here. One is that the correlation of the returns on oil and the stock market is positive; the other that it is invariant to changes in oil price volatility. Both are rejected in data for 1993–2008 for crude oil and Standard & Poor's 500 stock market index. Based on real options theory, consequences are pointed out. The widespread idea that higher volatility leads to increased value and postponed investment is not necessarily valid.     

以技术动力学视角看电动汽车的发展前景

在目前能源短缺、环境污染严重、节能减排的巨大压力下,先进的电动汽车技术成为人们关注的热点.基于技术动力学的一般规律,针对电动汽车发展涉及的电池技术发展、充电基础设施及其与电动汽车的协调等问题,对电动汽车作为新生事物具有的学习效应、网络与路径依赖以及其中的不确定性、技术路线与政府的角色等方面进行了分析,可为电动汽车发展战略与政策的制定提供参考.     

Competition and Strategic Budget Choices in the Motion Picture Industry*

In this article, we study the effect of differentiation on firms' optimal investments in advertising and product quality in the specific context of the motion picture industry. To guide our empirical analysis, we develop a stylized model uncovering that competition in advertising is the highest for intermediate levels of horizontal differentiation, while product quality increases monotonically in differentiation. We corroborate our theoretical predictions with a large dataset on the movie industry confirming both the inverted U-shaped relationship between advertising and differentiation, and the monotonically increasing relationship between product quality and differentiation.