International doctoral students as knowledge brokers: reciprocity,trust and solidarity in transnational networks

In this article, we examine the role of brokerage, the knowledge that brokers transfer and the social conditions of that transfer. Previous research suggests that highly skilled migrants spanning multiple locales have the advantage of being able to transfer knowledge as they move from one place to another. In this study, using a network perspective, we look at the activities of international doctoral students in their transfer of knowledge and illustrate the underlying social conditions of knowledge transfer through transnational friendship networks. Using a qualitative methodology, we examine the research questions and 35 in‐depth interviews, as well as egocentric network analysis conducted in Germany. In the findings, we explore the social conditions of knowledge brokerage, including trust, reciprocity and solidarity. Finally, we discuss the implications for further research on knowledge sharing among brokers and international students.     

DO STATES FREE RIDE IN ANTITRUST ENFORCEMENT?

Recent research has documented a substantial role in antitrust enforcement by U.S. states. While many of the cases litigated involve small local firms, a nontrivial portion encompasses multiple‐state issues. Some previous literature has investigated whether states engage in free‐riding behavior in environmental regulation, and whether governments free ride on private decisions in provision of public goods. In this paper, we analyze a sample of antitrust cases involving cross‐state impacts (from the Multi‐State Antitrust Database, provided by the National Association of Attorneys General) and explain the determinants of free riding (which we define as participating in a case, but not as a lead plaintiff). (JEL L40, H41, H77)     

A CRITICAL ASSESSMENT OF MEASURES OF CENTRAL BANK INDEPENDENCE

The methodology of measuring central bank independence suggested by Bade and Parkin three decades ago and inverse correlations between the measures and inflation have been widely accepted. The measurement literature has made important contributions identifying elements of institutional design that establish the relationship between the central bank and the government and the measurements from an ordinal perspective provide some useful insights about the major institutional redesigns of central banks during the past several decades. At the same time, the measurement literature is problematic. First, a dummy variable bifurcating central banks into groups of independent and less independent central banks can duplicate the standard correlations suggesting the information content of the specific measures is limited; second, the correlations between inflation and measures of independence are not as stable as claimed; and most important, the measurements are subject to classification problems that have not been fully appreciated. Review of the institutional design and history of the Bank of Korea, Bank of Japan, and the Federal Reserve provide evidence the classification problems are important. The measures of independence are more appropriately regarded as ordinal rankings of central bank independence rather than considered cardinal measures suitable for econometric modeling. (JEL E50, E58, E65)     

WHY DO GOVERNMENTS END UP WITH DEBT? SHORT‐RUN EFFECTS MATTER

This paper reconsiders the impact of public debt in an economy with heterogeneous households and incomplete markets to emphasize the short‐run effects of an increase in public debt. As compared to models that rest on steady‐state analysis, we show that the welfare gains of a public debt increase are substantially higher when transitional dynamics are accounted for. The additional debt issue allows for a temporary reduction in the income tax rate, which stimulates labor supply and generates an overshooting of the interest rate. The short‐run gains create a temptation to deviate toward higher levels of debt. Debt increases continue to generate welfare gains even when debt is considerably higher than its long‐run optimal level. (JEL E60, H60)     

HAVE EFFORTS TO REDUCE SMOKING REALLY CONTRIBUTED TO THE OBESITY EPIDEMIC?

Two of the most notable trends in public health over the past 30 yr are the reductions in smoking rates and the rapid rise in obesity rates. Several studies have investigated the relationship between these trends but have drawn different conclusions. In this article, we revisit this issue, attempting to clarify the prior discrepant results. Overall, we find no support for the claim that rising cigarette taxes have significantly contributed to rising obesity rates. Instead, we find only a moderately sized effect among former smokers . ( JEL I12)     

MAINTAINING COLLECTIVE IDENTITY IN A HOSTILE ENVIRONMENT: CONFRONTING NEGATIVE PUBLIC PERCEPTION AND FACTIONAL DIVISIONS WITHIN THE SKINHEAD SUBCULTURE

Previous examinations of skinhead groups have limited their attention to racist elements within the subculture. But skinheads are a far more heterogeneous group than earlier studies indicate. This diversity has put skinhead factions at odds with each other, and has challenged mainstream conceptions about the skinhead movement. In this paper, we document how traditional skinheads maintain their unique collective identity in the midst of subcultural conflict and hostile stereotypes perpetuated by mainstream society. The study employs both primary and secondary sources to examine collective identity among traditional skinheads. Culture and ideology play an important role in counteracting negative stereotypes and solidifying traditional skinhead identity. Through culture and politics traditional skinheads establish collective identity and promote their nonracist beliefs. By focusing on nonracist and antiracist factions we expand the current literature on the skinhead subculture. The results illustrate that skinhead groups are diverse. Traditional factions see racism as an abomination of original skinhead culture, and as a result, many groups have taken action to confront their racist skinhead counterparts.     

STEREOTYPE THREAT AND THE STUDENT‐ATHLETE

Achievement gaps may reflect the cognitive impairment thought to occur in evaluative settings (e.g., classrooms) where a stereotyped identity is salient (i.e., stereotype threat). This study presents an economic model of stereotype threat that reconciles prior evidence on how student effort and performance are influenced by this social‐identity phenomenon. This study also presents empirical evidence from a framed field experiment in which students at a selective college were randomly assigned to a treatment that primed their awareness of a negatively stereotyped identity (i.e., student‐athlete). This social‐identity manipulation reduced the test‐score performance of athletes relative to non‐athletes by 12%. These negative performance effects were concentrated among male student‐athletes who also responded to the social‐identity manipulation by attempting to answer more questions. (JEL I2, C9, D0)     

COMBINED PRODUCTION AND MAINTENANCE SCHEDULING FOR A MULTIPLE‐PRODUCT,SINGLE‐ MACHINE PRODUCTION SYSTEM

Traditionally, the problems of equipment maintenance scheduling and production scheduling in a multi‐product environment have been treated independently. In this paper, we develop a Markov decision process model that simultaneously determines maintenance and production schedules for a multiple‐product, single‐machine production system, accounting for the fact that equipment condition can affect the yield of different product types differently. The problem was motivated by an application in semiconductor manufacturing. After examining structural properties of the optimal policy, we compare the combined method to an approach often used in practice. In the nearly 6,000 test problems studied, the reward from the combined method was an average of more than 25 percent greater than the reward from the traditional method.