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(**) = papers with more than 1,000 citations
(*) = papers with more than 100 citations


Year: 2015

Barraza, J.A., Alexander, V., Beavin, L.E. Terris, E.T., Zak, P.J. 2015. The heart of the story: Peripheral physiology during narrative exposure predicts charitable giving.  Biological Psychology, 105: 138-143. [Digital Version]

Brosnan, S.F., Talbot, C.F., Essler, J.L., Leverett, K., Flemming, T., Dougall, P., Heyler, C., Zak, P.J. 2015. Oxytocin reduces food sharing in capuchin monkeys by modulating social distance.  Behaviour, in press.  


Zahedzadeh, G., Barraza, J. A., & Zak, P. J. 2015.  Persuasive narratives and costly actions. Terrorism and Political Violence, in press.

Zak, P.J. 2015. Neuromanagement: Using Neuroscience to Build High Performance Organizations. Forthcoming in: Organizational Neuroscience. P. Balthazard, D. Waldman, Eds., Emerald Publishers.

Zak, P.J. 2015. Why trust matters. Ivey Business Journal, in press.


Year: 2014

Bracken, B.K., Alexander, V., Zak, P.J., Romero, V., Barraza, J.A. 2014. Physiological synchronization is associated with narrative emotionality and subsequent behavioral response. In D.D. Schmorrow and C.M. Fidopiastis (Eds.), Human Computer Interaction, 3–13. [Digital Version]

Zak, P.J. The Neuroscience of Trust. 2014. People and Strategy, 37(1): 14-17. [Digital Version]


Year: 2013

Zak, P.J., and Barraza, J.A. 2013. Neurobiology of Collective Action. Frontiers in Neuroscience. 7(211). [Link]

Barraza, J.A., Grewal, N.S., Ropacki, S., Perez, P., Gonzalez, and Zak P.J. 2013. Effects of a 10-Day Oxytocin Trial in Older Adults on Health and Well Being. Experimental and Clinical Psycopharmacology, 21(2): 85-92. [Digital version]

Lin, P-Y., Grewal, N.S., Morin, C., Johnson, W.D., Zak, P.J. 2013. Oxytocin increases the influence of public service advertisements. PLoS ONE, 8(2). [Link]

Zak, P.J. 2013. Oxytocin and the reduction of aggression. In Topics in the Neurobiology of Aggression: Implications to Deterrence, Diane DiEuliis and Hrair Cabayan, Editors, U.S. Department of Defense. [Digital version] [Link]

Merolla, J.L, Burnett, G., Pyle, K., Ahmadi, S., Zak, P. 2013. Oxytocin and the biological basis for interpersonal and political trust. Political Behavior, 34(4). [Digital version]


Morhenn, V., Beavin, L.E., Zak, P.J. 2012. Massage increases oxytocin and reduces adrenocorticotropin hormone in humans. Alternative Therapies in Health and Medicine, 18(6): 11-18. [Digital version]

Sapra, S., Beavin, L.E., Zak, P.J. 2012. A combination of dopamine genes predicts success by professional Wall Street traders. PLoS ONE, 7(1). [Digital version]


Zak, P.J. 2011. Moral Markets. Journal of Economic Behavior & Organization, 77(2): 212-233. [Digital version]

Barraza, J.A., McCullough, M.E., Zak, P.J. 2011. Oxytocin infusion increases charitable donations regardless of monetary resources. Hormones and Behavior, 60: 148-151. [Digital version]

Zak, P.J. 2011. The physiology of moral sentiments. Journal of Economic Behavior & Organization, 77: 53-65. [Digital version]


Zak, P.J., Kugler, J. 2010. Neuroeconomics and international studies: A new understanding of trust. International Studies Perspectives, 12: 136-152.
[Digital version]

Vercoe, M., Zak, P.J. 2010. Inductive modeling using causal studies in neuroeconomics: brains on drugs. Journal of Economic Methodology, 17(2): 123-137. [Digital version]

Sapra, S.G., Zak, P.J. 2010. Eight lessons from neuroeconomics for money managers. CFA Institute Research Publications, Behavioral Finance and Investment Management: 2010 (2): 63-76.
[Digital version]


Zak, P.J., Kurzban, R., Ahmadi, S. Swerdloff, R.S., Park, J., et al. 2009. Testosterone administration decreases generosity in the ultimatum game. PLoS ONE, 4(12). [Digital version]

Barraza, J. A. & Zak, P. J. 2009. Empathy toward strangers triggers oxytocin release and subsequent generosity. Annals of the New York Academy of Sciences, 1167: 182-189. [Digital version]

Year: 2008

Zak, P. J. 2008. The neurobiology of trust. Scientific American, June: 88-95. [Digital version]

Zak, P. J. 2008. Moral markets: the critical role of values in the economy. Princeton University Press. [Digital version]

Morhenn, V. B., Park, J. W., Piper, E. & Zak, P. J. 2008. Monetary sacrifice among strangers is mediated by endogenous oxytocin release after physical contact. Evolution and Human Behavior, 29: 375–383. [Digital version]

Hoge, E. A., Pollack, M. H., Kaufman, R. E., Zak, P. J. & Simon, N. M. 2008. Oxytocin levels in social anxiety disorder. CNS Neuroscience &Therapeutics, 14: 165–170. [Digital version]

Year: 2007

Zak, P. J. 2007. The neuroeconomics of trust. Ch 2. in Renaissance in Behavioral Economics. R. Frantz, Ed. Routledge [Digital version]

Park, J. W. & Zak, P. J. 2007. Neuroeconomics studies. Analyse and Kritik, 29: 47-59. [Digital version]

(*) Zak, P. J., Stanton, A. A. & Ahmadi, S. 2007. Oxytocin increases generosity in humans. Public Library of Science ONE, 2(11). [Digital version]

Year: 2006

Zak, P. J. & Fakhar, A. 2006. Neuroactive hormones and interpersonal trust: international evidence. Economics & Human Biology, 4: 412-429. [Digital Version]

Year: 2005

Zak, P. J. 2005. Trust: a temporary human attachment facilitated by oxytocin. Behavioral and Brain Sciences, 28(3): 368-369. [Digital version]

(**) Kosfeld, M., Heinrichs, M., Zak, P. J. Fischbacher, U. & Fehr, E. 2005. Oxytocin increases trust in humans. Nature, 435(2): 673-676. [Digital version]

(*) Zak, P. J., Kurzban, R. & Matzner, W. T. 2005. Oxytocin is associated with human trustworthiness. Hormones and Behavior, (48): 522-527. [Digital version]

Zak, P. J., Borja, K., Matzner, W. T. & Kurzban, R. 2005. The neuroeconomics of distrust: sex differences in behavior and physiology. American Economic Review Papers and Proceedings, 95(2): 360-363. [Digital version]

Year: 2004

(*) Zak, P. J., Kurzban, R. & Matzner, W. T. 2004. The neurobiology of trust. Annals of the New York Academy of Sciences, 1032: 224-227. [Digital version]

Hirshleifer, J. J. & Zak, P. J. 2004. The Bioeconomics of social behavior: introduction. Journal of Bioeconomics, 6(1): 1-2. [Digital version]

(*) Zak, P. J. 2004. Neuroeconomics. Philosophical Transactions of the RoyalSociety B (Biology), 359(1451): 1737-1748. [Digital version]

Year: 2003

Denzau, A. T. & Zak, P. J. 2003. Explore and exploit: an evolutionary analysis of institutional dynamics. In Human Nature and Public Policy: An Evolutionary Approach, Albert Somit and Steven A. Peterson, Editors, pp. 139-160, Palgrave Macmillan.

Zak, P. J. 2003. Trust. Capco Institute Journal of Financial Transformation, 7: 13-21. [Digital version]

Year: 2002

Geddes, R. & Zak, P. J. 2002. The rule of one-third. Journal of Legal Studies, 31(1): 119-137. [Digital version]

Zak, P. J. 2002. Institutions, property rights and growth. Louvain Economic Review, 68(1-2): 55-73.

Knack, S. & Zak, P. J. 2002. Building trust: public policy, interpersonal trust, and economic development. Supreme Court Economic Review, 10: 91-107. [Digital version]

Zak, P. J. & Park, K. W. 2002. Population genetics and economic growth. Journal of Bioeconomics, 4(1): 1-37. [Digital version]

Year: 2001

(**) Zak, P. J. & Knack, S. 2001. Trust and growth. The Economic Journal, 111: 295-321. [Digital version]

Zak, P. J. & Denzau, A.T. 2001. Economics is an evolutionary science. In Evolutionary Approaches in the Behavioral Sciences: Toward a Better Understanding of Human Nature, Albert Somit and Stephen Peterson, Editors, pp. 31-65, JAI Press. [Digital version]

Year: 2000

Zak, P. J. 2000. Larceny. Economics of Governance, 1: 157-179. [Digital version]