Samuel Arbesman
Ewing Marion Kauffman Foundation
Publications 21
#1Aaron Clauset (CU: University of Colorado Boulder)H-Index: 30
#2Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
Last.Daniel B. Larremore (Harvard University)H-Index: 14
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The faculty job market plays a fundamental role in shaping research priorities, educational outcomes, and career trajectories among scientists and institutions. However, a quantitative understanding of faculty hiring as a system is lacking. Using a simple technique to extract the institutional prestige ranking that best explains an observed faculty hiring network—who hires whose graduates as faculty—we present and analyze comprehensive placement data on nearly 19,000 regular faculty in three dis...
#1Jillian J. Jordan (Yale University)H-Index: 9
#2David G. Rand (Yale University)H-Index: 43
Last.Nicholas A. Christakis (Yale University)H-Index: 75
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Cooperation is essential for successful human societies. Thus, understanding how cooperative and selfish behaviors spread from person to person is a topic of theoretical and practical importance. Previous laboratory experiments provide clear evidence of social contagion in the domain of cooperation, both in fixed networks and in randomly shuffled networks, but leave open the possibility of asymmetries in the spread of cooperative and selfish behaviors. Additionally, many real human interaction s...
#1Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
#2K. Brad Wray (State University of New York at Oswego)H-Index: 15
Many have suggested that young scientists are having a more difficult time getting research grants, citing the fact that the average age of recipients of prestigious grants is getting higher. We present a population model that suggests that the reason the average age of grant recipients is now higher is because the growth rate of science has slowed down in the last four decades.
#1Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
Much of what we believe to be factual has an expiry date, but the good news is that we can see it coming
#1Kate Maxwell (Duke University)H-Index: 1
#2Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
Research has established that mobility of human capital is an important component of economic growth and change, but has yet to fully understand how and why talent chooses to locate within certain regions or cities. Using a survey of Inc. 500 founders from 2000–2008, we investigate the movement of founders of companies on the list from the location of their alma maters to where they founded their companies. Using this unique dataset, we are able to gain insight into the mobility of this importan...
#1Dane Stangler (Ewing Marion Kauffman Foundation)H-Index: 8
#2Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
In The Princess Bride, the lead kidnapper, Vizzini, dismisses missteps in his ill-fated scheme with a frustrated exclamation, “Inconceivable!” At length, his soft-spoken mercenary, Inigo Montoya, ventures: “You keep using that word. I do not think it means what you think it means.” An equivalent asymmetry in the world of economic analysis is the use of turnover on the Fortune 500 list. For years, many people have cited turnover — and ostensibly rising turnover — as a proxy for positive economic ...
#1A. James O’Malley (Harvard University)H-Index: 18
#2Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
Last.Nicholas A. Christakis (Harvard University)H-Index: 75
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Using a population-based, panel survey, we study how egocentric social networks change over time, and the relationship between egocentric network properties and health and pro-social behaviors. We find that the number of prosocial activities is strongly positively associated with having more friends, or an increase in degree, with approximately 0.04 more prosocial behaviors expected for every friend added. Moreover, having more friends is associated with an improvement in health, while being hea...
#1Samuel Arbesman (Ewing Marion Kauffman Foundation)H-Index: 9
#2Jon WilkinsH-Index: 1
When people are doing something they are passionate about, they work harder and produce a better product. Thus, underemployed scholars represent, in some sense, a good that is currently trading well below its actual value. Of course, in the course of their primary employment, many of these individuals can and do provide value to the economy outside of traditional scholarship. However, by providing a mechanism for those who wish to conduct research, we can allow these people to engage in their pa...
Human populations are both highly cooperative and highly organized. Human interactions are not random but rather are structured in social networks. Importantly, ties in these networks often are dynamic, changing in response to the behavior of one's social partners. This dynamic structure permits an important form of conditional action that has been explored theoretically but has received little empirical attention: People can respond to the cooperation and defection of those around them by makin...
Abstract The collapse of empires is exceedingly difficult to understand. The author examined the distribution of imperial lifetimes using a data set that spans more than three millennia and found that it conforms to a memoryless exponential distribution in which the rate of collapse of an empire is independent of its age. Comparing this distribution to similar lifetime distributions of other complex systems—specifically, biological species and corporate firms—the author explores the reasons behi...