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


Year: 2017

Zak, P.J. (2017).  Hormones and Economic Decisions. Trust Factor: The Science of Creating High Performance Companies.  New York: AMACOM.​

Zak, P.J. (2017). The Neuroscience of Trust.  Harvard Business Review. January- February.

Year: 2016

Nadler, A., Zak, P.J. (2016). Hormones and Economic Decisions. Neuroeconomics, Martin Reuter, Christian Montag (Eds), pp 41-66, Berlin: Springer.  [Digital Version]

Zak, P.J. (2016). The Science Behind Building a Culture of Trust. TD Magazine, June 2016. 48-53.  [Digital Version]

Year: 2015

Alexander, V., Tripp, S., & Zak, P.J. (2015). Preliminary Evidence for the Neurophysiologic Effects of Online Coupons: Changes in Oxytocin, Stress, and Mood.  Psychology & Marketing. 32(9): 977–986. [Digital Version]

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. 152(7-8): 941–961 [Digital Version]

Crosby, L. A. & Zak, P.J. (2015). The Neuroscience of Brand Trust. Marketing Management. May: 22-23. [Digital Version]

Curry, B., Donaldson, B., Vercoe, M,. Filippo, M., & Zak, P. J. (in press). Oxytocin Responses After Dog and Cat Interactions Depend on Pet Ownership and Affects Interpersonal Trust. Human-Animal Interaction Bulletin. Human-Animal InteractionBulletin. (3)2: 56-71. [Digital Version]

Efremidze, L, Sarraf, G., Miotto, K., & Zak, P.J. (in press). The Neural Inhibition of Learning Increases Asset Market Bubbles: Experimental Evidence. Journal of Behavioral Finance. 

Zahedzadeh, G., Barraza, J. A., & Zak, P. J.  (2015). Persuasive narratives and costly actions. Terrorism and Political Violence. [Digital Version]

Zak, P.J., Barraza, J.A. (2015). The neuroscience of candy preferences.  Neuromarketing Theory and Practice, 14, 6-7. [Digital Version]

Zak, P.J. (2015). Building Trust Is a Blood Sport. Ivey Business Journal.​ November/December. [Digital Version]

Zak, P.J. (2015). Why Inspiring Stories Make Us React: The Neuroscience of Narrative.  Ch 2. in Cerebrum,  Dana Press. [Digital Version]


Year: 2014 

Barraza, J. A. (2014). Neuroscientific Considerations of Trust and Influence. In Diane DiEuliis, William Casebeer, Dr. Jim Giordano, Nick Wright, & Hriar Cabayan (Eds.), Leveraging Neuroscientific and Neurotechnological (NeuroS&T) Developments with Focus on Influence and Deterrence in a Networked World. U.S. Department of Defense.

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

Zak, P.J. (2014). Why your brain loves good storytelling.  Harvard Business Review, Oct. 28. [Digital Version]


Year: 2013

Barraza, J.A., Grewal, N.S., Ropacki, S., Perez, P., Gonzalez, & 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]

Barraza, J. A., & Zak P. J.  (2013). Oxytocin instantiates empathy and promotes prosocial behavior. In E. Choleris, D. Pfaff, and Dr M. Kavaliers (Eds.), Oxytocin, Vasopressin and Related Peptides in the Regulation of Behavior. 

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]

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): 753-776. [Digital version]

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

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

Year: 2012

Hoge, E., Lawson, E., Metcalf, C., Keshaviah, A., Zak, P., Pollack, M., Simon, N., (2012). Plasma oxytocin immunoreactive products and response to trust in patients with social anxiety disorder. Depress Anxiety, 29(11):924-30.  [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. (2012). The Moral Molecule: The Source of Love and Prosperity. New York: Dutton.


Year: 2011 

Barraza, J. A. (2011). Positive emotional expectations predict volunteer outcomes for new volunteers. Motivation and Emotion, 35, 211-219.

Barraza, J.A., McCullough, M.E., Ahmandi, S. & 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). Moral Markets. Journal of Economic Behavior & Organization, 77(2): 212-233. [Digital version]

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

Year: 2010

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]

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]

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

Year: 2009

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]

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]

Year: 2008

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]

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]

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]

Zak, P. J. (2008).  Neuroeconomics. McGraw-Hill Yearbook of Science & Technology, 248-250. [Digital version]

Year: 2007

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

Zak, P. J. (2007). Chapter 2: The neuroeconomics of trust. In R. Frantz (Eds.) Renaissance in Behavioral Economics (17-33). Routledge. [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

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

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

Year: 2004

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]

(*) 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]

Year: 2003

Denzau, A. T. & Zak, P. J. (2003). Explore and Exploit: An Evolutionary Analysis of Institutional Dynamics. In A. Somit and S. A. Peterson (Eds.), Human Nature and Public Policy: An Evolutionary Approach (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. & Denzau, A.T. (2001). Economics is an evolutionary science. In Albert Somit and Stephen Peterson (Eds.), Evolutionary Approaches in the Behavioral Sciences: Toward a Better Understanding of Human Nature (31-65). JAI Press. [Digital version]

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

Year: 2000

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