Improving collective decisions by eliminating overconfidence: mental, neural and social processes

Project Information

rid-O

Grant agreement ID: 819040

DOI

10.3030/819040

Project closed

EC signature date 30 July 2019

Start date 1 September 2019

End date 31 August 2025

Funded under

• EXCELLENT SCIENCE - European Research Council (ERC)

Total cost

€ 1 928 912,00

EU contribution

€ 1 928 912,00

Coordinated by

LUDWIG-MAXIMILIANS-UNIVERSITAET MUENCHEN
Germany

CORDIS provides links to public deliverables and publications of HORIZON projects.

Links to deliverables and publications from FP7 projects, as well as links to some specific result types such as dataset and software, are dynamically retrieved from OpenAIRE .

Publications

Peer reviewed articles (40)

Joining a group diverts regret and responsibility away from the individual

Author(s): Marwa El Zein, Bahador Bahrami
Published in: Proceedings of the Royal Society B: Biological Sciences, Issue 287/1922, 2020, Page(s) 20192251, ISSN 0962-8452
Publisher: Royal Society of London
DOI: 10.1098/rspb.2019.2251

The Temporal Dynamics of Attentional Allocation during Counterfactual Learning

Author(s): Germain Lefebvre, Jamal Esmaily, Zahra Rezazadeh, Bahador Bahrami
Published in: Journal of Cognitive Neuroscience, Issue July 02 2026, 2026, Page(s) 1-12, ISSN 0898-929X
Publisher: Cambridge Center for Behavioral Studies
DOI: 10.1162/jocn.a.2617

Studying attention to IPCC climate change maps with mobile eye-tracking

Author(s): Doga Gulhan, Bahador Bahrami, Ophelia Deroy
Published in: PLOS ONE, Issue 20, 2025, Page(s) e0316909, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0316909

Shared Responsibility Decreases the Sense of Agency in the Human Brain

Author(s): Marwa El Zein, Ray J. Dolan, Bahador Bahrami
Published in: Journal of Cognitive Neuroscience, Issue 34, 2022, Page(s) 2065-2081, ISSN 0898-929X
Publisher: Cambridge Center for Behavioral Studies
DOI: 10.1162/jocn_a_01896

Human cooperation with artificial agents varies across countries

Author(s): Jurgis Karpus, Risako Shirai, Julia Tovar Verba, Rickmer Schulte, Maximilian Weigert, Bahador Bahrami, Katsumi Watanabe, Ophelia Deroy
Published in: Scientific Reports, Issue 15, 2025, Page(s) 1-15, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-025-92977-8

Promoting Erroneous Divergent Opinions Increases the Wisdom of Crowds

Author(s): Federico Barrera-Lemarchand, Pablo Balenzuela, Bahador Bahrami, Ophelia Deroy, Joaquin Navajas
Published in: Psychological Science, Issue 35, 2026, Page(s) 872-886, ISSN 0956-7976
Publisher: SAGE Publications
DOI: 10.1177/09567976241252138

A Model-Free Reinforcement Learning Implementation of Decision Making Under Uncertainty by Sequential Sampling

Author(s): Jamal Esmaily, Rani Moran, Yasser Roudi, Bahador Bahrami
Published in: Neural Computation, Issue 38, 2026, Page(s) 1344-1375, ISSN 0899-7667
Publisher: MIT Press
DOI: 10.1162/neco.a.1543

Covert neural and autonomic signatures of shared perception

Author(s): Mustafa Yavuz, Jamal Esmaily, Bahador Bahrami, Ophelia Deroy
Published in: Social Cognitive And Affective Neuroscience, Issue 21, 2026, Page(s) 1-14, ISSN 1749-5024
Publisher: Oxford University Press
DOI: 10.1093/scan/nsag009

Intelligence brings responsibility - Even smart AI assistants are held responsible

Author(s): Louis Longin, Bahador Bahrami, Ophelia Deroy
Published in: iScience, Issue 26, 2026, Page(s) 107494, ISSN 2589-0042
Publisher: Elsevier BV
DOI: 10.1016/j.isci.2023.107494

<scp>Co‐perceiving</scp>: Bringing the social into perception

Author(s): Ophelia Deroy, Louis Longin, Bahador Bahrami
Published in: WIREs Cognitive Science, Issue 15, 2024, Page(s) 1-10, ISSN 1939-5078
Publisher: John Wiley & Sons Inc.
DOI: 10.1002/wcs.1681

The Diversity Gap: When Diversity Matters for Knowledge

Author(s): Justin Sulik, Bahador Bahrami, Ophelia Deroy
Published in: Perspectives on Psychological Science, Issue 17, 2026, Page(s) 752-767, ISSN 1745-6916
Publisher: Blackwell Publishing Inc.
DOI: 10.1177/17456916211006070

Democratic forecast: Small groups predict the future better than individuals and crowds.

Author(s): Guillaume Dezecache, Martin Dockendorff, Dardo N. Ferreiro, Ophelia Deroy, Bahador Bahrami
Published in: Journal of Experimental Psychology: Applied, Issue 28, 2024, Page(s) 525-537, ISSN 1076-898X
Publisher: American Psychological Association
DOI: 10.1037/xap0000424

Prosocial learning: Model-based or model-free?

Author(s): Parisa Navidi, Sepehr Saeedpour, Sara Ershadmanesh, Mostafa Miandari Hossein, Bahador Bahrami
Published in: PLOS ONE, Issue 18, 2023, Page(s) e0287563, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0287563

An Active Sensing Paradigm for Studying Human Auditory Perception

Author(s): Dardo N. Ferreiro, Valentin R. Winhart, Benedikt Grothe, Bahador Bahrami, Michael Pecka
Published in: Frontiers in Integrative Neuroscience, Issue 16, 2022, Page(s) 1-14, ISSN 1662-5145
Publisher: Frontiers Research Foundation
DOI: 10.3389/fnint.2022.892951

Algorithm exploitation: Humans are keen to exploit benevolent AI

Author(s): Jurgis Karpus, Adrian Krüger, Julia Tovar Verba, Bahador Bahrami, Ophelia Deroy
Published in: iScience, Issue 24, 2025, Page(s) 102679, ISSN 2589-0042
Publisher: Elsevier BV
DOI: 10.1016/j.isci.2021.102679

Effect of perceived interpersonal closeness on the joint Simon effect in adolescents and adults

Author(s): Raheleh Shafaei, Zahra Bahmani, Bahador Bahrami, Maryam Vaziri-Pashkam
Published in: Scientific Reports, Issue 10/1, 2020, Page(s) 1-10, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-020-74859-3

The roots of polarization in the individual reward system

Author(s): Germain Lefebvre, Ophélia Deroy, Bahador Bahrami
Published in: Proceedings of the Royal Society B: Biological Sciences, Issue 291, 2024, Page(s) 1-12, ISSN 0962-8452
Publisher: Royal Society of London
DOI: 10.1098/rspb.2023.2011

The Communication of Metacognition for Social Strategy in Psychosis: An Exploratory Study

Author(s): Uri Hertz, Vaughan Bell, Joseph M Barnby, Andrew McQuillin, Bahador Bahrami
Published in: Schizophrenia Bulletin Open, Issue 1/1, 2020, Page(s) 1-10, ISSN 2632-7899
Publisher: Oxford University Press
DOI: 10.1093/schizbullopen/sgaa058

Shared Awareness Across Domain‐Specific Artificial Intelligence: An Alternative to Domain‐General Intelligence and Artificial Consciousness

Author(s): Ophelia Deroy, Davide Bacciu, Bahador Bahrami, Cosimo Della Santina, Sabine Hauert
Published in: Advanced Intelligent Systems, Issue 6, 2025, Page(s) 1-10, ISSN 2640-4567
Publisher: Wiley
DOI: 10.1002/aisy.202300740

Compromising improves forecasting

Author(s): Dardo N. Ferreiro, Ophelia Deroy, Bahador Bahrami
Published in: Royal Society Open Science, Issue 10, 2023, Page(s) 1-15, ISSN 2054-5703
Publisher: The Royal Society
DOI: 10.1098/rsos.221216

The actions of others act as a pseudo-reward to drive imitation in the context of social reinforcement learning

Author(s): Anis Najar, Emmanuelle Bonnet, Bahador Bahrami, Stefano Palminteri
Published in: PLOS Biology, Issue 18/12, 2020, Page(s) e3001028, ISSN 1545-7885
Publisher: Public Library of Science
DOI: 10.1371/journal.pbio.3001028

Punishing the individual or the group for norm violation

Author(s): Marwa El Zein, Chloe Seikus, Lee De-Wit, Bahador Bahrami
Published in: Wellcome Open Research, Issue 4, 2019, Page(s) 139, ISSN 2398-502X
Publisher: Wellcome Trust
DOI: 10.12688/wellcomeopenres.15474.2

Helping the waiter to hold his tray: Rigid haptic linkage promotes inter-personal motor coordination

Author(s): Dardo N Ferreiro, Chris D Frith, Bahador Bahrami
Published in: Quarterly Journal of Experimental Psychology, Issue every quarter, 2021, Page(s) 174702182110090, ISSN 1747-0218
Publisher: Psychology Press
DOI: 10.1177/17470218211009082

Diversity of opinions promotes herding in uncertain crowds

Author(s): Joaquin Navajas, Oriane Armand, Rani Moran, Bahador Bahrami, Ophelia Deroy
Published in: Royal Society Open Science, Issue 9, 2022, Page(s) 1-15, ISSN 2054-5703
Publisher: The Royal Society
DOI: 10.1098/rsos.191497

Interindividual differences in Pavlovian influence on learning are consistent

Author(s): Sepehr Saeedpour, Mostafa Minadari Hossein, Ophelia Deroy, Bahador Bahrami
Published in: Royal Society Open Science, Issue 10, 2023, Page(s) 1-15, ISSN 2054-5703
Publisher: The Royal Society
DOI: 10.1098/rsos.230447

Diffusion of punishment in collective norm violations

Author(s): Anita Keshmirian, Babak Hemmatian, Bahador Bahrami, Ophelia Deroy, Fiery Cushman
Published in: Scientific Reports, Issue 12, 2022, Page(s) 1-12, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-022-19156-x

Many heads are more utilitarian than one

Author(s): Anita Keshmirian, Ophelia Deroy, Bahador Bahrami
Published in: Cognition, Issue 220, 2025, Page(s) 104965, ISSN 0010-0277
Publisher: Elsevier BV
DOI: 10.1016/j.cognition.2021.104965

Self-serving incentives impair collective decisions by increasing conformity

Author(s): Sepideh Bazazi, Jorina von Zimmermann, Bahador Bahrami, Daniel Richardson
Published in: PLOS ONE, Issue 14/11, 2019, Page(s) e0224725, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0224725

Algorithmic Nudging: The Need for an Interdisciplinary Oversight

Author(s): Christian Schmauder, Jurgis Karpus, Maximilian Moll, Bahador Bahrami, Ophelia Deroy
Published in: Topoi, Issue 42, 2023, Page(s) 799-807, ISSN 0167-7411
Publisher: D. Reidel Pub. Co.
DOI: 10.1007/s11245-023-09907-4

Strategic disinformation outperforms honesty in competition for social influence

Author(s): Ralf H.J.M. Kurvers, Uri Hertz, Jurgis Karpus, Marta P. Balode, Bertrand Jayles, Ken Binmore, Bahador Bahrami
Published in: iScience, Issue 24, 2025, Page(s) 103505, ISSN 2589-0042
Publisher: Elsevier BV
DOI: 10.1016/j.isci.2021.103505

The effect of feedback valence and source on perception and metacognition: An fMRI investigation

Author(s): George Zacharopoulos, Uri Hertz, Ryota Kanai, Bahador Bahrami
Published in: Cognitive Neuroscience, Issue quarterly, 2020, Page(s) 1-9, ISSN 1758-8928
Publisher: Psychology Press
DOI: 10.1080/17588928.2020.1828323

Does decision confidence reflect effort?

Author(s): Nobuhiro Hagura, Jamal Esmaily, Bahador Bahrami
Published in: PLOS ONE, Issue 18, 2023, Page(s) e0278617, ISSN 1932-6203
Publisher: Public Library of Science
DOI: 10.1371/journal.pone.0278617

Distinct neurocomputational mechanisms support informational and socially normative conformity

Author(s): Ali Mahmoodi, Hamed Nili, Dan Bang, Carsten Mehring, Bahador Bahrami
Published in: PLOS Biology, Issue 20, 2022, Page(s) e3001565, ISSN 1545-7885
Publisher: Public Library of Science (PLoS)
DOI: 10.1371/journal.pbio.3001565

Social interoception: Perceiving events during cardiac afferent activity makes people more suggestible to other people's influence

Author(s): Mariana von Mohr, Gianluca Finotti, Giulia Esposito, Bahador Bahrami, Manos Tsakiris
Published in: Cognition, Issue 238, 2025, Page(s) 105502, ISSN 0010-0277
Publisher: Elsevier BV
DOI: 10.1016/j.cognition.2023.105502

Self-competence increases the willingness to pay for social influence

Author(s): Uri Hertz, Evangelia Tyropoulou, Cecilie Traberg, Bahador Bahrami
Published in: Scientific Reports, Issue 10/1, 2020, Page(s) 1-11, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-020-74857-5

Social Judgment Interferes With Action Generation During Instrumental Learning

Author(s): Zahra Rezazadeh, Bahador Bahrami, Simone Schütz-Bosbach
Published in: Journal of Psychophysiology, Issue 39, 2026, Page(s) 74-86, ISSN 0269-8803
Publisher: Hogrefe & Huber Publishers
DOI: 10.1027/0269-8803/a000348

Comparing experience- and description-based economic preferences across 11 countries

Author(s): Hernán Anlló, Sophie Bavard, FatimaEzzahra Benmarrakchi, Darla Bonagura, Fabien Cerrotti, Mirona Cicue, Maelle Gueguen, Eugenio José Guzmán, Dzerassa Kadieva, Maiko Kobayashi, Gafari Lukumon, Marco Sartorio, Jiong Yang, Oksana Zinchenko, Bahador Bahrami, Jaime Silva Concha, Uri Hertz, Anna B. Konova, Jian Li, Cathal O’Madagain, Joaquin Navajas, Gabriel Reyes, Atiye Sarabi-Jamab, Anna Shestak
Published in: Nature Human Behaviour, Issue 8, 2024, Page(s) 1554-1567, ISSN 2397-3374
Publisher: Springer Science and Business Media LLC
DOI: 10.1038/s41562-024-01894-9

Interpersonal alignment of neural evidence accumulation to social exchange of confidence

Author(s): Jamal Esmaily, Sajjad Zabbah, Reza Ebrahimpour, Bahador Bahrami
Published in: eLife, Issue 12, 2023, Page(s) 122, ISSN 2050-084X
Publisher: eLife Sciences Publications
DOI: 10.7554/elife.83722

The role of anticipated regret in choosing for others

Author(s): Shiro Kumano, Antonia Hamilton, Bahador Bahrami
Published in: Scientific Reports, Issue 11, 2023, Page(s) 1-15, ISSN 2045-2322
Publisher: Nature Publishing Group
DOI: 10.1038/s41598-021-91635-z

Human pairs show collective benefit in olfactory perception despite individual differences and verbal limits

Author(s): Mustafa Yavuz, Saman Sayahpour, Bahador Bahrami, Ophelia Deroy
Published in: iScience, Issue 29, 2026, Page(s) 114535, ISSN 2589-0042
Publisher: Elsevier BV
DOI: 10.1016/j.isci.2025.114535