Viewpoint: Replication in economics

Abstract.  This examination of the role and potential for replication in economics points out the paucity of both pure replication – checking on others' published papers using their data – and scientific replication – using data representing different populations in one's own work or in a comment. Several controversies in empirical economics are used to illustrate how and how not to behave when replicating others' work. The incentives for replication are examined, and proposals aimed at journal editors and authors are advanced that might stimulate an activity that most economists applaud but few perform.     

Research Productivity in Business Economics: The Case of Marketing

Abstract. The German Economic Review ( GER ) recently published a paper by Fabel, Hein and Hofmeister about research productivity in Austrian, German and Swiss universities. The authors derive the rankings of institutions and subject areas by analyzing an impressive and comprehensive dataset, which captures the research output of business administration departments. While these rankings might hold at an aggregate level, they lack face validity at a subject-specific level. This lack of validity is demonstrated in the case of marketing by analyzing the research output of the top-ranked institutions in top-ranked journals. A number of proposals to overcome these kinds of problems are provided.     

Research Productivity in Business Economics: An Investigation of Austrian,German and Swiss Universities

Abstract. We draw on a new and comprehensive dataset that collects the research output of business economists employed by Austrian, German and Swiss universities. We compute research rankings of departments and identify the leading departments in selected subdisciplines. Moreover, we investigate how institutional design and individual characteristics affect research productivity and draw some conclusions for the training of junior scientists.     

European economics: An analysis based on publications in the core journals

In this paper we provide a ranking of European economics institutions and countries based on publications in a core set of 10 economic journals from 1991 to 1996. We find that the three leading universities in Europe are the London School of Economics, Tel-Aviv University and Oxford University while the three top-ranked countries are the U.K., France and Israel.     

Gender and graduate economics education in the US

Abstract

This paper reports on the findings of a survey of top economics graduate schools as they relate to women and men. The results provide strong evidence that at these top graduate schools, women graduate students are less integrated in their economic disciplines than are male graduate students. In the second part of the paper, this paper relates those findings to alternative theories as to why this is the case. This paper concludes by suggesting that the emphasis on theoretical studies in the current core of the graduate economics program can be seen as a type of hazing process that seems to have a significant cost since many women (and men) with great creative promise are discouraged from continuing in economics and do not benefit nearly as much as they would have from more policy-driven core courses.     

A ranking of journals for the aspiring health economist

This article identifies and ranks 104 journals that might logically serve as the core for the interdisciplinary field of Health Economics. These journals are identified by analysing approximately 15 000 articles contained in the current CVs of 100 top health economists. Of the nearly 1200 journals spanned by these CVs, 104 journals were outlets for more than five of these top health economists. The 104 journals are ranked using eigenfactor and article influence scores as well as the percentile rank for each journal within its Institute for Scientific Information category. The primary intention is to create a broad-based journal list that exposes possible research outlets for aspiring health economists and to report the relative rankings of such outlets using established metrics.     

A revisionist perspective of European research in economics

The study by Kalaitzidakis et al. (Eur. Econom. Rev. 113 (1999a) 1150-1168, hereafter KMS) continues to exert significant influence on the literature that evaluates the relative publication performance of European centres of research in economics. The current paper argues that the methodology employed by KMS is deficient, and that it is not the methodology these authors intended to employ. I utilise an improved approach to revise the original rankings that relied on publication output from 1991 to 1996, and to update the relevant findings using 1997-2002 data. The revised rankings differ greatly from those reported by KMS. The results also suggest that there have been dramatic shifts in the relative ranking of the various European institutions over time. As expected, rankings are sensitive to the choice of journals considered. However, ranking sensitivity is considerably more pronounced with respect to changes in individual performance over time, than to the group of journals used to measure performance.     

An Improved Two‐step Regularization Scheme for Spot Volatility Estimation

We are concerned with the problem of spot volatility estimation in the presence of microstructure noise. We introduce an estimator based on the technique of multi‐step regularization. A preliminary form for such an estimator was proposed in Ogawa (2008) and was shown to work in a real‐time manner. However, the main drawback of this scheme is that it needs a lot of observation data. The aim of the present paper is to introduce an improvement to this scheme, such that the modified estimator can work more efficiently and with a data set of smaller size. The technical aspects of implementation of the proposed scheme and its performance on simulated data are analysed. The scheme is tested against other spot volatility estimators, namely a realized volatility type estimator, the Fourier estimator and three kernel estimators.     

Economics research in Canada: a long-run assessment of journal publications

Abstract.  We examine the publications of authors affiliated with an economics research institution in Canada in (1) the Top-10 journals in economics according to journals' impact factors, and (2) the Canadian Journal of Economics . We consider all publications in the even years from 1980 to 2000. Canadian economists contributed about 5% of publications in the Top-10 journals and about 55% of publications in the Canadian Journal of Economics over this period. We identify the most active research centres and identify trends in their relative outputs over time. Those research centres successful in publishing in the Top-10 journals are found to also dominate the Canadian Journal of Economics . Additionally, we check the robustness of our findings with respect to journal selection, and we present data on authors' PhD origin, thereby indicating output and its concentration in graduate education.     

Profits and politics: Coordinating technology adoption in agriculture

This paper examines the political economy of government-led coordination of economic activity in a simple two-sector model in which individuals' choice of agricultural technology affects industrialization. We demonstrate the existence of multiple equilibria; the economy is either characterized by the use of a traditional agricultural technology and a low level of industrialization or the use of a mechanized technology and a high level of industrialization. Relative to the traditional technology, use of the mechanized technology increases output but leaves some population groups worse off. We show that the distributional implications of choosing the mechanized technology restrict the possibility of Pareto-improving coordination by an elected policy-maker, even when we allow for income redistribution.     

A theory of self-selection in a market with matching frictions: An application to delay in refereeing times in economics journals

A matching market with imperfect information is studied. With imperfect information, it is shown that friction in a meeting process can facilitate self-selection and thus may improve the matching outcome. As an application, the effect of delay in refereeing time on publication outcome is analyzed in a publication process in economics journals. Though the delay causes efficiency loss by postponing the dissemination of new research, it will better sort the papers to each journal by their qualities by preventing mediocre papers from being submitted to a prestigious journal and published by luck. If an assortative outcome (good papers in prestigious journals and mediocre papers in less prestigious journals) is efficient, the delay may actually improve the publication outcome. Other matching market examples are also discussed.     

An ordinal ranking of economic institutions

We provide the first ranking of countries’ economic institutions using an ordinal methodology. Using the five areas of the Fraser Institute’s Economic Freedom of the World (EFW) index, we find that final rankings of a country’s institutions are sensitive to the importance-ordering of Area 1 (Size of Government). When Areas 2–5 are in the most important position, we find that there is no significant difference between the EFW rankings and our rankings. When Area 1 is placed in the most important position, however, a number of European countries with large welfare states but good governance do poorly.     

The export price index with the effect of variety and an empirical analysis

The standard international trade models predict that economic growth induces decreasing export prices. Korea has recorded sustainable economic and export growth, and its export prices have been deteriorating over the last decades. Unlike the standard assumption of one good per country, the new theoretical approach by Krugman [Krugman, P. (1980) ‘Scale Economies, Product Differentiation, and Pattern of Trade’. American Economic Review 70, 950–959, Krugman, P. (1989) ‘Differences in income elasticities and trends in real exchange rates’. European Economic Review, 33, 1055–1085.], and Helpman and Krugman [Helpman, E. and Krugman, P. (1985), Market structure and foreign trade: increasing returns, imperfect competition, and international economy, The MIT Press, Cambridge, MA.] takes into account varieties of goods produced in each country. And many studies suggest that traditional estimates without variety effect have been rather under-stated. Therefore this paper develops a proper modeling for quantifying the impact of export variety on an exact export price index. Throughout the period (1984–2000), the conventional export price index without variety effect leads to under-state Korea's export price by 89.3%. This paper shows that the fall in Korean export prices has been offset by the effect of export variety. This paper emphasizes the effect of export variety on international trade.     

The strength of weak ties in crime

The aim of this paper is to investigate whether weak ties play an important role in explaining criminal activities. We first develop a model where individuals learn about crime opportunities by interacting with other peers. These interactions can take the form of either strong or weak ties. We find that increasing the percentage of weak ties induces more transitions from non-crime to crime and thus the crime rate in the economy increases. This is because, when the percentage of weak ties is high, delinquents and non-delinquents are in close contact with each other. We then test these predictions using the U.S. National Longitudinal Survey of Adolescent Health (AddHealth), which contains unique detailed informations on friendship relationships among teenagers. The theoretical predictions of our model are confirmed by the empirical analysis since we find that weak ties, as measured by friends of friends, have a positive impact on criminal activities.     

Financial reforms,product differentiation,and trade

We hypothesize that exports of differentiated products, which entail greater upfront costs, increase more as financial reforms take place. We find strong and robust empirical support of this hypothesis with a comprehensive set of measures of reforms encompassing the banking sector, interest rates, equity and international capital markets.     

Small investment and large returns: Terrorism, media and the economy

The study investigates the role of the media in the impact of terrorism on the economy. A unique data set of the newspaper articles that reported terrorist attacks during 2002 is used to evaluate their impact on the Tel Aviv Stock Exchange. An econometric analysis is performed in order to understand how a newspaper decides to cover a terrorist attack, i.e. the number of articles, positioning of articles, whether to include photos and the size of headlines. It was found that media coverage is an important channel through which terrorism produces economic damage. The findings also showed that the economic damage caused by terrorist attacks increases monotonically with the amount of media coverage. It was also found that the economic impact of the media coverage diminishes over time.     

Product complexity and economic development

Development is a process of transforming a country's economic structure towards the production and export of more complex products. We use Hidalgo and Hausmann's (2009) method of reflections to compute measures of product and country complexity, and rank 5107 products and 124 countries. We find that: (i) the most complex products are in machinery, chemicals, and metals, while the least complex products are raw materials and commodities, wood, textiles, and agricultural products; (ii) the most complex economies in the world are Japan, Germany, and Sweden, and the least complex, Cambodia, Papua New Guinea, and Nigeria; (iii) the major exporters of the more complex products are the high-income countries, while the major exporters of the less complex products are the low-income countries; and (iv) export shares of the more complex products increase with income, while export shares of the less complex products decrease with income.