Browsing by Author "Rand, David Gertler"

Now showing items 1-20 of 21

    • Challenging Cooperation: Inequality, Global Commons, Future Generations 

      Hauser, Oliver Paul (2016-04-25)
      Cooperation is abundant in the world around us, spanning all levels of biological and social organisation. Yet the existence and maintenance of cooperation is puzzling from an evolutionary perspective because the costs ...

    • Contagion of Cooperation in Static and Fluid Social Networks 

      Jordan, Jillian J.; Rand, David G.; Arbesman, Samuel; Fowler, James H.; Christakis, Nicholas A. (Public Library of Science, 2013)
      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 ...

    • Decision-Making in Research Tasks with Sequential Testing 

      Pfeiffer, Thomas; Rand, David Gertler; Dreber-Almenberg, Anna (Public Library of Science, 2009)
      Background: In a recent controversial essay, published by JPA Ioannidis in PLoS Medicine, it has been argued that in some research fields, most of the published findings are false. Based on theoretical reasoning it can be ...

    • Direct Reciprocity with Costly Punishment: Generous Tit-for-Tat Prevails 

      Rand, David Gertler; Ohtsuki, Hisashi; Nowak, Martin A. (Elsevier, 2009)
      The standard model for direct reciprocity is the repeated Prisoner's Dilemma, where in each round players choose between cooperation and defection. Here we extend the standard framework to include costly punishment. Now ...

    • Dopamine and Risk Choices in Different Domains: Findings Among Series Tournament Bridge Players 

      Zeckhauser, Richard Jay; Rand, David Gertler; Wernerfelt, Nils Christian; Garcia, Justin; Lum, Koji; Dreber-Almenberg, Anna (2010)
      Individuals differ significantly in their willingness to take risks, partly due to genetic differences. We explore how risk taking behavior correlates with different versions of the dopamine receptor D4 gene (DRD4). We ...

    • Dopamine and Risk Choices in Different Domains: Findings Among Serious Tournament Bridge Players 

      Dreber-Almenberg, Anna; Rand, David Gertler; Wernerfelt, Nils Christian; Garcia, Justin R.; Lum, J. Koji; Zeckhauser, Richard Jay (Kennedy School of Government, Harvard University, 2010)
      Individuals differ significantly in their willingness to take risks, partly due to genetic differences. We explore how risk taking behavior correlates with different versions of the dopamine receptor D4 gene (DRD4). We ...

    • The Dopamine Receptor D4 Gene (DRD4) and Self-Reported Risk Taking in the Economic Domain 

      Dreber, Anna; Rand, David Gertler; Wernerfelt, Nils Christian; Garcia, Justin; Lum, J. Koji; Zeckhauser, Richard Jay (John F. Kennedy School for Government, Harvard University, 2011)
      Background: Recent evidence suggests that individual variation in risk taking is partly due to genetic factors. Methodology/Principal Findings: We explore how self-reported risk taking in different domains correlates with ...

    • Dynamic remodeling of in-group bias during the 2008 Presidential election 

      Rand, David Gertler; Pfeiffer, Thomas; Dreber-Almenberg, Anna; Sheketoff, Rachel W.; Wernerfelt, Nils Christian; Benkler, Yochai (National Academy of Sciences, 2009)
      People often favor members of their own group, while discriminating against members of other groups. Such in-group favoritism has been shown to play an important role in human cooperation. However, in the face of changing ...

    • Economic Games on the Internet: The Effect of $1 Stakes 

      Amir, Ofra; Rand, David Gertler; Gal, Ya'akov (Public Library of Science, 2012)
      Online labor markets such as Amazon Mechanical Turk (MTurk) offer an unprecedented opportunity to run economic game experiments quickly and inexpensively. Using Mturk, we recruited 756 subjects and examined their behavior ...

    • Emotions as infectious diseases in a large social network: the SISa model 

      Hill, Alison Lynn; Rand, David Gertler; Nowak, Martin A.; Christakis, N (The Royal Society, 2010)
      Human populations are arranged in social networks that determine interactions and influence the spread of diseases, behaviours and ideas. We evaluate the spread of long-term emotional states across a social network. We ...

    • The Evolution of Antisocial Punishment in Optional Public Goods Games 

      Rand, David Gertler; Nowak, Martin A. (Nature Publishing Group, 2011)
      Cooperation, where one individual incurs a cost to help another, is a fundamental building block of the natural world and human society. It has been suggested that costly punishment can promote the evolution of cooperation, ...

    • Evolution of In-Group Favoritism 

      Fu, Feng; Tarnita, Corina Elena; Christakis, Nicholas Alexander; Wang, Long; Rand, David Gertler; Nowak, Martin A. (Nature Publishing Group, 2012)
      In-group favoritism is a central aspect of human behavior. People often help members of their own group more than members of other groups. Here we propose a mathematical framework for the evolution of in-group favoritism ...

    • Individual versus systemic risk and the Regulator's Dilemma 

      Beale, N.; Rand, David Gertler; Battey, H.; Croxson, K.; May, R. M.; Nowak, Martin A. (Proceedings of the National Academy of Sciences, 2011)
      The global financial crisis of 2007–2009 exposed critical weaknesses in the financial system. Many proposals for financial reform address the need for systemic regulation—that is, regulation focused on the soundness of the ...

    • Infectious Disease Modeling of Social Contagion in Networks 

      Hill, Alison Lynn; Rand, David Gertler; Nowak, Martin A.; Christakis, Nicholas Alexander (Public Library of Science, 2010)
      Many behavioral phenomena have been found to spread interpersonally through social networks, in a manner similar to infectious diseases. An important difference between social contagion and traditional infectious diseases, ...

    • It's the thought that counts: The role of intentions in noisy repeated games 

      Rand, David Gertler; Fudenberg, Drew; Dreber, Anna (Elsevier BV, 2015)
      We examine cooperation in repeated interactions where intended actions are implemented with noise but intentions are perfectly observable. Observable intentions lead to more cooperation compared to control games where ...

    • Massively Parallel Model of Extended Memory Use in Evolutionary Game Dynamics 

      Randles, Amanda Elizabeth; Rand, David Gertler; Lee, Christopher; Sircar, Jayanta K.; Nowak, Martin A.; Pfister, Hanspeter (IEEE, 2013)
      To study the emergence of cooperative behavior, we have developed a scalable parallel framework for evolutionary game dynamics. This is a critical computational tool enabling large-scale agent simulation research. An ...

    • Name and Shame 

      Rand, David Gertler; Nowak, Martin A. (Elsevier, 2009)

    • The Online Laboratory: Conducting Experiments in a Real Labor Market 

      Horton, John Joseph; Rand, David Gertler; Zeckhauser, Richard Jay (John F. Kennedy School of Government, Harvard University, 2010)
      Online labor markets have great potential as platforms for conducting experiments, as they provide immediate access to a large and diverse subject pool and allow researchers to conduct randomized controlled trials. We argue ...

    • Positive Interactions Promote Public Cooperation 

      Rand, David Gertler; Dreber, Anna; Ellingson, Tore; Fudenberg, Drew; Nowak, Martin A. (American Association for the Advancement of Science, 2009)
      The public goods game is the classic laboratory paradigm for studying collective action problems. Each participant chooses how much to contribute to a common pool that returns benefits to all participants equally. The ideal ...

    • Systematic Differences in Impact across Publication Tracks at PNAS 

      Rand, David Gertler; Pfeiffer, Thomas (Public Library of Science, 2009)
      Background: Citation data can be used to evaluate the editorial policies and procedures of scientific journals. Here we investigate citation counts for the three different publication tracks of the Proceedings of the ...