A) WORKING PAPERS/PREPRINTS:

• 1. Influence  in Social Networks (with Dan Friedman and Friederike Mengel), available at SSRN (December 16, 2024).

• 1. 1. • Submitted.  

• 2. Assessing private solutions to collective action problems in a 34-nation study (with Eugene Malthouse, Thomas Hills, and 32 others), PsyArXiv (October, 2024). 

• 1. 1. • Supplementary Appendix.

        • Project Webpage.

        • Submitted.

• 3. Predictors of bullying victimization at school: a network approach (with  Pablo Brañas-Garza, Antonio Cabrales, and Mónica Vasco), available at SSRN (August 1, 2024).

     • • Media coverage: El País, ABC,  La Vanguardia, Europa Press,  Onda Cero, El Debate, Tele 5,  Faro de Vigo (in Spanish) and many others (see the Dissemination link here).

       • R&R in American Economic Journal: Economic Policy.

  4. Large-scale cross-societal examination of real- and minimal-group biases (with Xin Yang, Jonathan Schulz, and other 297 co-authors), PsyArXiv 2024. 

• 1. 1. • Preregistered report accepted in Nature Human Behavior.

• 5. Counting Pros and Cons in Decisions under Ambiguity (with Dan Levin). Available at SSRN (April 26, 2024).

     • • Submitted

  6. The role of unobservable characteristics in friendship network formation (with Pablo Brañas-Garza y Lorenzo Ductor),  arXiv:2206.13641 (2022).

  7. Experimental Economics Meets Language Choice (with Ilaski Barañano and José Ramon Uriarte), mimeo (2016).

B) PUBLICATIONS:

• 1. Diffusion of mobile banking among rural women: Incentivizing local leaders vs. a marketing campaign (with Pablo Brañas-Garza and Ericka G. Rason-Ramírez),  Journal of Behavioral and Experimental Finance, forthcoming (2025)

     1. • Replication files 

        • SSRN  Working paper (2024 ).

  2. Distributive preferences and Effort Provision: A Two-Way Link (with Ibai Martínez-Macías and Luis Miller), Journal of Behavioral and Experimenal Economics 117,  102385 (2025).

• 1. 1. • PDF (Jan. 2025)

        • Supplementary Appendices

• 3. The network expression of a Roma diaspora (with Francisco J. Ogáyar, Vasile Muntean, Juan F. Gamella, and Antonio M. Espín), Global Networks 25(3),  e70013  (2025).

• 1. 1. • PsyArXiv (2023).

        • Project webpage.

        • Data & Codes

• 4. Economic preferences and cognitive abilities among teenagers in Spain (with Monica Vasco, Antonio Alfonso, Andreu Arenas, Antonio Cabrales, José Cuesta, Antonio Espín, Maria Paz Espinosa, Teresa García-Muñoz, Àlex Izquierdo Nofuentes, Diego Jorrat, Jaromír Kovářík, Pablo Lomas, Alfonso Martínez-Estudillo, Daniel Montolio, María del Pino Ramos-Sosa, Patricia Román, Angel Sanchez, María José Vazquez-De Francisco, and Pablo Branas-Garz ), Scientific Data 12(7), 1 - 7 (2025).

• 1. 1. • This article makes publicly available the data on our TeensLab project.

        • Media coverage: El País, ABC,  Europa Press,  La Vanguardia, Onda Cero, El Debate, Tele 5,  Faro de Vigo (in Spanish) and many others (see the Dissemination link here).

• 5. Non-Representative Sampled Networks: Estimation of Network Structural Properties by Weighting (with Chih-Sheng Hsieh, Stanley Ko, Yu-Chin Hsu, and Trevon Logan), Journal of Econometrics 240(1), 1-20 (2024).

• 1. 1. • PDF (Jan. 2024).

        •  NBER  Working Paper No. 25270 (2023) containing the corrections of more network statistics but lacking any asympotic analysis.

• 6. The weakness of common job contacts (with María Paz Espinosa and Sofía Ruiz-Palazuelos), European Economic Review, forthcoming (2023). [Supplementary Material]

• 1. 1. • The published version only contains the static theoretical analysis. The previous version (march 2022) that circulated under the title "The impact of network cycles on employment and inequality" contains both the static and dynamic analysis. 

• 7. Exposure to the Covid-19 pandemic environment and generosity (with Pablo Brañas-Garza, Antonio Espín, Antonio Alfonso, Diego Jorat, and Tere García), Royal Society Open Science 9: 210919 (2022).

     1. • Instructions (in both English and Spanish)

        • Media coverage: El País, ABC, El País, La Vanguardia and many other Spanish newspapers (in Spanish), and Cosmos (in English)

  8. "Hyper-altruistic behavior vanishes with high stakes (with Pablo Brañas-Garza, Diego Jorrat and María C. López), PLoS ONE 16(8): e0255668 (2021).

  9. "Collaboration Networks, Geography and Innovation: Local and National Embeddedness" (with Pablo Galaso), Papers in Regional Science 100(2), 349-377 (2021).  [WP version].

• 1. 1. • Media Coverage:  ABC. 

• 10. "Hot versus Cold Behavior in Centipede Games" (with Bernardo García-Pola and Nagore Iriberri), Journal of Economic Science Association, 6(2), 226-238 (2020).    [Online Supplementary Material]   [pdf with Appendix]   [Data: HOT treatment; COLD treatment]

  11. "Non-equilibrium Behavior in Centipede Games" (with Bernardo García-Pola and Nagore Iriberri), Games & Economic Behavior 120, 391-433 (2020).   [pdf with Appendix] [Data]

  12. "Digit ratio (2D : 4D) and prosocial behaviour in economic games: no direct correlation with generosity, bargaining or trust-related behaviours" (with Pablo Brañas-Garza, Antonio Espín, and Teresa García-Muñoz), Biology Letters 15(8) (2019). [Longer version] [Electronic supplementary material] [Data]

  13. "Learning in Network Games" (with Friederike Mengel and Gabriel Romero), Quantitative Economics 9(1), 85-139 (2018). [Additonal material]

      1. • Awarded the 2018 Best Paper Prize by the Econometric Society.

  14. "Natural disasters and indicators of social cohesion" (with Aitor Calo-Blanco, Friederike Mengel and Gabriel Romero), PLoS ONE 12(6): e0176885 (2017). [Online Supplementary Material]

  15. "Prenatal Sex Hormones and Social Integration” (with Pablo Brañas-Garza, Michael Davidson, Dotan Haim, Shannon Carcelli, and James Fowler), Network Science 5(4), 476-489 (2017). [Supplementary Information]

  16. "Ellsberg Paradox: Ambiguity and Complexity Aversions Compared" (with Dan Levin and Tao Wang), Journal of Risk and Uncertainty 52(1), 47-64 (2016).    [Final version + Appendix + Data (see Appendix C)]   [Data (as .csv)]

  17. "Risk and Knightian Uncertainty," in Altman M. (ed.): Real-World Decision Making: An Encyclopedia of Behavioral Economics (pp. 369-371), ABC-Clio (2015).

  18. "Risk Aversion and Social Networks" (with Marco van der Leij), Review of Network Economics 13(2), 121-155 (2015). 

  19. "Prosocial Behavior and Gender" (with María Paz Espinosa), Frontiers in Behavioral Neuroscience 9(88): doi:10.3389/fnbeh.2015.00088 (2015).

  20. "How central are clients in sexual networks created by commerical sex?" (with Chih-Sheng Hsieh and Trevon Logan), Scientific Reports 4,7540, doi:10.1038/srep07540 (2014). [supplementary material]

  21. "Second-to-forth digit ratio has a non-monotonic impact on altruism" (with Pablo Brañas-Garza and Levent Neyse), PLoS ONE 8(4): e60419. doi:10.1371/journal.pone.0060419 (2013).

  22. "Strategic Interaction and Conventions" (with MP Espinosa and G Ponti), Revista Internacional de Sociología, Special Issue on Behavioral and Experimental Economics, 70(extra 1), 15-26 (2012).

  23. "Limited Memory Can Be Beneficial for the Evolution of Cooperation" (with G Horváth and F Mengel), Journal of Theoretical Biology 300, 193-205 (2012). [working paper (extended version)]

  24. "Degree Heterogeneity and Prosocial Norms in Social Networks" (with P Brañas-Garza, R Cobo-Reyes, MP Espinosa, N Jiménez and G Ponti), Physica A 391(3), 849-853 (2012).

  25. “Altruism and Social Integration” (with P Brañas-Garza, R Cobo-Reyes, MP Espinosa, N Jiménez, and G Ponti), Games and Economic Behavior 69(2), 249-257 (2010) [working paper]

  26. “Giving It Now or Later. Altruism and Discounting,” Economic Letters 102(3), 152-154 (2009).

  27. “Fixed Price plus Rationing: An Experiment” (with V Grimm and G Ponti), Experimental Economics 11(4), 402-422 (2008).

C) UNPUBLISHED RESEARCH

• 1. Digit Ratios and Social Preferences: A Comment on Buser (2012) (with Pablo Brañas), Chapman University Working Paper 13-31 (2013).

This comment illustrates that the measurement method of digit ratios used in Buser (2012) is biased and discusses the potential econometric issues arising in the econometric analysis due to this bias. The comment was rejected in Games and Economic Behavior and we are no longer trying to publish it. To give the problems in Buser (2012) certain visibility, the working paper is available on our webpages. We hope this will prevent other scholars from using Buser's methodology in their future work. We would like to thank the referees and other people working in related topics (see the Acknowledgment footnote) for their support.

• 2. A Survey on Social Preferences, Ikerlanak Working Paper Series 36/09 (2009).

This paper surveys the theories of social preferences and shows formally their predictions in classic experimental protocols. I have never tried to publish it. However, it is very useful while teaching the social preferences in undergraduate as well as graduate classes of experimental and behavioral economics.