James D. Adams’s research while affiliated with Rensselaer Polytechnic Institute and other places

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Publications (54)


How Rapidly Does Science Leak Out? A Study of the Diffusion of Fundamental Ideas
  • Article

September 2013

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34 Reads

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18 Citations

Journal of Human Capital

James D. Adams

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J. Roger Clemmons

More rapid diffusion of science increases technological opportunity and innovation. To measure the diffusion of science, we use the lag between citing and cited scientific papers. With data from 1981 to 1999, the lag averages 6 years, increases with citation delay, and decreases with firm research. Additional data from 1980 to 2010 show that the lag increases with complexity of papers, age of lines of research and fields, and publication-submission lags; decreases with team size; and shows no evidence of strategic delay. Field differences in characteristics help explain field differences in citation lags, but deployment of specialized human capital among sectors also matters.





The Growing Allocative Inefficiency of the U.S. Higher Education Sector

July 2009

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2 Reads

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2 Citations

This chapter presents new evidence on the productivity of U.S. universities. Interest in this subject originates with recent developments in U.S. higher education that strike as noteworthy and perhaps troubling. First, despite their high state, growth of employment and output in top U.S. research universities has slowed down in recent years. And second, growth of university research has not kept pace with that of industrial research. This chapter finds evidence of growing allocative inefficiency in U.S. higher education. The most compelling evidence for this claim derives from research output, which is better measured than teaching output at the same time. It is found that the universities whose productivity grows less rapidly experience more rapid growth in research share. The chapter suggests a different and more privatized approach to funding universities that would place greater reliance on parental finance of teaching, and federal and private foundation finance of research. In any event, some solution seems urgent if the United States is to retain its preeminence in higher education, and subsequently in academic and industrial science, technology, and innovation.


Capturing Knowledge

July 2009

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3 Reads

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3 Citations

The objective of this chapter is to examine factors that influence the probability that a highly skilled worker will remain local or stay in the state. Specifically, the chapter measures how various individual, institutional, and geographic attributes affect the probability that new PhDs going to industry stay in the metropolitan area or state where they trained. The study focuses on PhDs who received their degree in one of ten fields in science and engineering (S&E) during the period 1997 to 1999. The chapter provides a discussion of the role new PhDs play in knowledge transfer and the role of geographic proximity in promoting the transfer. The chapter also offers a conceptual model of an individual's decision to migrate. The chapter concludes that states and local areas capture knowledge embodied in newly-minted PhDs headed to industry, but not at an overwhelming rate.


The Role of Search in University Productivity: Inside, Outside, and Interdisciplinary Dimensions

January 2009

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27 Reads

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19 Citations

Industrial and Corporate Change

The make-or-buy decision is analyzed in a simple two-task principal-agent model. There is a cost-saving/quality tradeoff in effort provision. The principal faces a dichotomous choice between weak ("make") and strong ("buy") cost-saving incentives for the agent; the dichotomy is due to an incomplete-contracting limitation necessitating that one party be residual claimant. Choosing "buy" rather than "make" leads to higher cost-saving effort and -- in a plausible "main case" -- to lower quality effort; this in spite of stronger direct quality-provision incentives in the former case.


The NBER-Rensselaer Scientific Papers Database: Form, Nature, and Function

January 2009

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27 Reads

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9 Citations

This article is a guide to the NBER-Rensselaer Scientific Papers Database, which includes more than 2.5 million scientific publications and over 21 million citations to those papers. The data cover an important sample of 110 top U.S. universities and 200 top U.S.-based R&D-performing firms during the period 1981-1999. This article describes the file system which comprises the database, explains the variables included in the files, and discusses the functions of the various files. It includes numerous descriptive tables, as well as graphs of the data in the time series dimension. In addition, it discusses limitations and strengths of the data as well as some questions that the data might be used to address.


Is the U.S. Losing Its Preeminence in Higher Education?

January 2009

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26 Reads

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5 Citations

The expansion of U.S. universities after World War II gained from the arrival of immigrant scientists and graduate students, the broadening of access to universities, and the development of military research and high technology industry. Since the 1980s, however, growth of scientific research in Europe and East Asia has exceeded that of the U.S., suggesting convergence in world science and engineering and a falling U.S. share. But the slowdown of U.S. publication rates in the late 1990s is a different matter, in that the rise of science elsewhere does not imply a U.S. slowdown in any obvious sense. Using a panel of U.S. universities, fields and years, evidence is found of a slowdown in the growth of resources. In turn, this has caused a deceleration in the growth of research output in public universities and university-fields falling into the middle 40 percent and bottom 40 percent of their disciplines. These developments can be traced to slower growth in tuition and state appropriations in public universities compared to revenue growth, including from endowment, in private universities.


Science and industry: Tracing the flow of basic research through manufacturing and trade

July 2008

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23 Reads

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13 Citations

Economics of Innovation and New Technology

This paper describes flows of basic research through the US economy during the late 20th century. In addition, the paper studies the effect of the flows on scientific papers in industries and fields. This article differs from others in its use of measures of science rather than technology. Together, its results present a picture of the structure of basic research flows in a modern, science-intensive economy. Basic research flows are large within petrochemicals and drugs, and within software and communications. Flows of chemistry, physics, and engineering are common throughout all industries - biology and medicine are almost confined to petrochemicals and drugs; and computer science is nearly as restricted to software and communications. In general, basic research flows are more concentrated within scientific fields than within industries. Our findings concerning the production of scientific papers indicate that the effect of a 1% change in academic R&D spillovers significantly exceeds that of industrial spillovers. In addition, within-field effects exceed effects between-fields, while within- and between-industry effects are roughly equal. It follows that scientific fields limit basic research flows more than industries do, perhaps because large firms implicitly span a range of industries.


Citations (48)


... A rich history of innovation fosters the development of high-quality, technologically advanced products, increasing firms' competitiveness and profitability. Second, innovation enhances expected profitability and productivity by reducing investment costs and enabling firms to realize potential economies of scale in production (Griffith, Harrison, & Van Reenen, 2006;Adams & Jaffe, 1996). Third, innovation allows firms to temporarily establish a monopoly position in the market, leading to higher profits (Schumpeter, 2013). ...

Reference:

Patent Intensity and Firm Performance: Evidence from Chinese Listed Firms
Bounding the Effects of R&D: An Investigation Using Matched Establishment-Firm Data
  • Citing Article
  • December 1996

The RAND Journal of Economics

... The results allow us to reflect on the topics PSJ research discusses and compare them to those discussed by policymakers and think tanks. In theory, policy scholarship should follow policymaking (though, typically, there is a significant lag between journal publication and issue emergence, see Adams & Roger Clemmons, 2013;Powell, 2016). Policy scholars reading this know attention to issues is finite, as is journal space, so the issues appearing in PSJ can safely be thought of as markers of important topics. ...

How Rapidly Does Science Leak Out? A Study of the Diffusion of Fundamental Ideas
  • Citing Article
  • September 2013

Journal of Human Capital

... Admas et al. (2005) conducted research based on literature data published by the top 110 universities in the United States. Their results showed that the international collaboration of research institutions has a positive impact on the frequency of paper citations, but there is a negative correlation with scientific productivity [14]. In related research of the industry, it has also been found that too much scientific research collaboration hinders an organization's absorptive capacity and independent innovation ability and damages the accumulation and creation of internal knowledge [15]. ...

Scientific Teams and Institution Collaborations: Evidence from U.S. Universities, 1981-1999
  • Citing Article
  • July 2004

... There are many labour market theories in macroeconomics dealing with matching (Fedorets, Lottmann, & Stops, 2019) or human capital sorting (Ahlin, Andersson, & Thulin, 2018), which aim at improving employment rates and quality of employment. However, individuals' free will always plays a role in employment issues, such as a personal preference in the choice of a geographical location to work and live (Sumell, Stephan, & Adams, 2009), suggesting the importance of a microeconomic approach through the agency theory (Lam, 2010;Lam & de Campos, 2015). The structuration theory is thus chosen as a background for this dissertation, as it reconciles both approaches, enabling us to consider both personal preferences and actions, and environmental structures such as formal and informal institutions in the analysis (Giddens, 1991). ...

Capturing Knowledge: The Location Decision of New PhDs Working in Industry
  • Citing Article
  • Full-text available
  • January 2005

... engineering vs. science) (Fritsch and Krabel 2012;Gu, Levin, and Luo 2018). Also, geographical areas with a concentration of innovative companies find more employment of Ph.D. graduates in the private sector (Stephan et al. 2004). Finally, the macroeconomic environment influences students' employment decision (Boulos 2016). ...

Doctoral Education and Economic Development: The Flow of New Ph.D.s to Industry
  • Citing Article
  • May 2004

Economic Development Quarterly

... International mobility ("nomadism") has always been a feature of scientific fields, although the EU would prefer that such mobility occurs with greater frequency within the Union's ERA to help stimulate reforms and share knowledge among member states. The factors responsible for present levels of mobility in single countries have been investigated in numerous studies during the past two decades and we have learned much recently (Crespi, Geuna and Nesta, 2005;Constant and DÁgosto, 2008;Zubieta, 2008;Kahn and Ginther, 2008;de Grip, Fouarge, and Sauermann, 2009;Kim, Lee and Marschke, 2006;Adams and Clemmons, 2008), but until now there has been no comprehensive study of academics from representative disciplines that now conduct the majority of research in Europe's top universities. This paper intends to help fill that gap. ...

The Geography of Scientific Ideas and the Mobility of Scientists: U.S. Evidence
  • Citing Article

... For example, up until the 1930 s, only four American scholars were Nobel Prize winners. However, 8,000 scientists, including 12 Nobel Prize winners, migrated to the U.S. between 1933 and 1944, contributing to the hegemonic status of the U.S. (Adams 2010). Over the span of seven decades of U.S. scholarship hegemony, countless international students have migrated to the U.S. The recruitment and number of international students have been increasing, as the U.S. makes efforts to show linguistic and cultural dominance, illustrating scholastic hegemony and the influence of cultural capital in higher education (Banks and Bhandari 2012). ...

Is the United States Losing its Preeminence in Higher Education?
  • Citing Article
  • January 2012

... RP is an effect with various and complex determinants (Ramesh Babu and Singh, 1998). Academics' motivation to conduct research and publish results is influenced by a complex array of factors, including their demographics, such as age, sex, marital status, qualifications and the composition of academic staff in their department (Aksnes, 2012;Adams and Clemmons, 2009;Ebadi and Schiffauerova, 2016;Oshagbemi, 2000). There are also personal and professional factors, such as motivation and self-efficacy, time allocated for different duties, pay scales, institutional position and promotion opportunities (Callaghan, 2015;Horodnic and Zait, 2015;Tien and Blackburn, 1996). ...

Science and Engineering Careers in the United States: An Analysis of Markets and Employment: The Growing Allocative Inefficiency of the U.S. Higher Education Sector
  • Citing Article
  • May 2011

... For example, research on this topic focuses variously on productivity and preferences (Balsmeier and Pellens, 2014), gender and family (Fox and Stephan, 2001), perceptions of incentives (Fitzenberger and Leuschner, 2012), the determinants of exit from academic research (Geuna and Shibayama 2015), informational problems leading into PhD study (Mangematin, 2000), trade-offs between salary and publication freedom (Sauermann and Roach, 2014), issues regarding mentors' capacities to provide information on a diversity of potential careers (Bozeman and Gaughan, 2011;Sauermann and Roach, 2012). Additional topics explored include the existence of suitable role models (Steele et al., 2013), the geographical location of suitable industry jobs (Sumell et al., 2009) and the market power of star scientists (Zucker and Darby, 2006;Zucker et al., 2002). This research provides a basis for a needed innovation in the area of research-on-research careers-the enhanced tracking of research careers in non-academic organizations. ...

Science and Engineering Careers in the United States: An Analysis of Markets and Employment: Capturing Knowledge: The Location Decision of New Ph.D.S Working in Industry
  • Citing Article
  • May 2011

... However, research has consistently demonstrated that measuring university productivity is a complex task (Massy et al., 2013;Sullivan, 2012), particularly in terms of measuring teaching-Learning and community engagement. In contrast, evaluating university productivity through research output is the most prevalent approach and is favored by the majority of researchers (Adams & Griliches, 2000). This is because evaluating a university's performance using research output relies on data-driven techniques rather than subjective judgments (Hicks et al., 2015). ...

Research Productivity in a System of Universities
  • Citing Article
  • January 1998

Annales d Économie et de Statistique