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Bahador Bahrami

Bahador Bahrami

Since Spetember 2019, Bahador is a Senior Scientist and Director of Crowd Cognition Lab in Department of Psychology at Ludwig Maximilian University in Munich, Germany and Prof of Social Neuroscience at Department of Psychology at Royal Holloway University of London UK. Before coming to Munich, he spent a year in Berlin as a visiting Humboldt Fellow at the Centre for Adaptive Rationality (ARC) at Max Planck Institute for Human Development. His background combines medicine (Tehran) with cognitive neuroscience (London, UCL) leading to a research programme to look at how humans interact socially and make joint decisions.

Bahador was born in Tehran in late 70s and grew up living in various cities in Iran. He went to Tehran University of Medical Sciences (1995-2003) and qualified as a GP before leaving Iran in 2004 to go to London. There he did a PhD in Psychology and Neuroscience at University College London supervised by Vincent Walsh, Geraint Rees and Nilli Lavie. His thesis was titled “Attention without Awareness” and looked at consciousness and attention in visual perception.
In 2008, he went to Denmark and did a 2-year postdoc in social cognition working with Chris Frith and Andreas Roepstorff. During this time he shifted his research focus from perception to social interactive decision making. In 2010 he came back to UK and started a British Academy postdoctoral fellowship in UCL hosted at Institute of Cognitive Neuroscience (ICN).
In 2013, Bahador became a group leader in ICN and started the Crowd Cognition Lab with a 5-yr funding from an ERC Starting Grant (NEUROCODEC). This project focused on understanding the cognitive and neurobiological basis of interactive decision making under uncertainty.

In June 2016 UK voted for Brexit.

In Jan 2018, Bahador left London and moved to Ludwig Maximilian University in Munich, Germany where he joined the Psychology Department. In October of 2018, Bahador was awarded an ERC Consolidator grant (rid-O) to continue his research on the role of overconfidence in interactive decision making under uncertainty.

Bahador Bahrami CV

Publication

Publications

by Bahador Bahrami

Bazazi S, von Zimmermann J, Bahrami B, Richardson D (2019) Self-serving incentives impair collective decisions by increasing conformity. PLoS ONE 14(11): e0224725. https://doi.org/10.1371/journal.pone.0224725 published - 2019

1. El Zein, M., Bahrami, B., Hertwig, R. Shared responsibility in collective decisions. Nature Human Behaviour. (2018) doi:10.1038/s41562-019-0596-4 published - 2019

Foda, H., Barger, K., Navajas, J., & Bahrami, B. (2017, October 4). Domain-general idiosyncratic anchoring of metacognition. pre-print - 2017

Navajas, J., Armand, O., Bahrami, B., & Deroy, O. (2018, April 5). Diversity of opinions promotes herding in uncertain crowds. pre-print - 2018

Li, L., Kumano, S., Keshmirian, A., Bahrami, B., Li, J., Wright, N. (2018) Parsing cultural impacts on regret and risk in Iran, China and the United Kingdom. Scientific Report. published - 2018

Haller, S., Bang, D., Bahrami, B. Lau, J. (2018) Group decision-making is optimal in adolescence. Scientific Report. published - 2018

Mahmoodi, A., Bahrami, B., Mehring, C. Reciprocity of social influence. Nature Communications. (2018) doi.org/10.1038/s41467-018-04925-y published - 2018

Hertz U, Bahrami B, Keramati M. Stochastic satisficing account of confidence in uncertain value-based decisions. PLoS ONE 13(4): e0195399. (2018) published - 2018

Navajas, J., Niella, T., Garbulsky, G., Bahrami, B., & Sigman, M. Aggregated knowledge from a small number of debates outperforms the wisdom of large crowds. Nature Human Behavior (2018) published - 2018

Sella, F., Blakey, R., Bang, D., Bahrami, B & Cohen-Kadosh, R. Who Gains More: Experts or Novices? The Benefits of Interaction under Numerical Uncertainty. Journal Of Experimental Psychology Human Perception and Performance (2018) published - 2017

Hertz, U., Palminteri, S., Brunetti, S., Olesen, C., Frith, CD., Bahrami, B. Neural computations underpinning the strategic management of influence in advice giving. Nature Communications (2017) published - 2017

Navajas, J., Hindocha, C., Foda, H., Keramati, M., Latham, P. E., & Bahrami, B. The idiosyncratic nature of confidence. Nature Human Behaviour (2017). published - 2017

Weil, R. S., Pappa, K., Schade, R. N., Schrag, A. E., Bahrami, B., Schwarzkopf, D. S., Crutch, S. J., O’Keeffe, A. G. and Morris, H. R. (2017), The Cats-and-Dogs test: A tool to identify visuoperceptual deficits in Parkinson’s disease. Mov Disord. doi:10.1002/mds.27176 published - 2017

Sadeghi, S., Ekhtiari, H., Bahrami,. B., Ahmadabadi, MN. Metacognitive Deficiency in a Perceptual but Not a Memory Task in Methadone Maintenance Patients. Scientific Report (2017) published - 2017

Dan Bang, Laurence Aitchison , Rani Moran , Santiago Herce Castanon , Banafshe Rafiee , Ali Mahmoodi, Jennifer Y. F. Lau , Peter E. Latham, Bahador Bahrami, and Christopher Summerfield. Confidence matching in group decision-making. Nature Human Behaviour (2017) 1:0117. published - 2017

Seyed-Allaei, S., Nasiriavanaki, Z., Bahrami, B., Shallice, T. Major Thought Restructuring: the roles of different prefrontal cortical regions. Journal of Cognitive Neuroscience (2017) published - 2017

Khalighinejad N, Bahrami B, Caspar EA, Haggard P. Social Transmission of Experience of Agency: An Experimental Study. Frontiers in Psychology. (2016) Aug 30;7:1315. published - 2016

Navajas J, Bahador B and Latham PE. Post-decisional accounts of biases in confidence. Current Opinion in Behavioral Sciences (2016) 11:55-60 published - 2016

Pescetelli, N., Rees, G., Bahrami, B. The perceptual and social components of metacognition. Journal of Experimental Psychology: General. (2016) 145(8):949-65. published - 2016

Pishnamazi, M., Tafakhori A., Loloee, S., Modabbernia, A., Aghamollaii, V., Bahrami, B., Winston JS. Attentional bias towards and away from fearful faces is modulated by developmental amygdala damage. Cortex (2016) 81:24-34. published - 2016

Hertz, U., Kelly M., Routledge, R., Winston, J., Wright, D., Dolan, R.J., Bahrami, B. Oxytocin Effect on Collective Decision Making: A Randomized Placebo Controlled Study. PLoS One (2016). 11(4)e0153352 published - 2016

Aitchison L, Bang D, Bahrami B, Latham PE (2015) Doubly Bayesian Analysis of Confidence in Perceptual Decision-Making. PLoS Comput Biol 11(10): e1004519. published - 2015

Hertz, U., Romand-Monnier, M., Kyriakopoulou, K., & Bahrami, B. Social Influence Protects Collective Decision Making From Equality Bias. Journal of Experimental Psychology: Human Perception and Performance. (2016). 42(2):164-172 published - 2016

Mahmoodi, A., Bang, B., Olsen, K., Zhao, Y.A., Shi, Z., Broberg, K., Safavi, S., Han, S., Ahmadabadi, M.N., Chris, D.F., Roepstorff, A., Rees, G., and Bahrami, B. Equality bias impairs collective decision-making across cultures. PNAS (2015) 12, 3835–3840 published - 2015

Megumi F, Bahrami B, Kanai R, Rees G. Brain activity dynamics in human parietal regions during spontaneous switches in bistable perception. NeuroImage.(2015). 107:190-197. published - 2015

Getov, S., Kanai, R., Bahrami, B., Rees, G. Human brain structure predicts individual differences in preconscious evaluation of facial dominance and trustworthiness. Soc. Cog. Affect. Neuro. (2015). 10(5): 690-699 published - 2015

Sandberg K, Barnes GR, Bahrami B, Kanai R, Overgaard M, Rees G. Distinct MEG correlates of conscious experience, perceptual reversals and stabilization during binocular rivalry.Neuroimage. (2014) 100:161-75. published - 2014

Bisazza, A., Butterworth, B., Piffer, L., Bahrami, B., Petrazzini, M.E.M., Agrillo, C. Collective enhancement of numerical acuity by meritocratic leadership in fish. Scientific Report. (2014) 4:4560 published - 2014

Bang, D., Fusaroli, R., Tylén, K., Olsen, K., Latham, P., Lau, J., Roepstorff, A., Rees, G., Frith, C., Bahrami, B. Does interaction matter? Testing whether a confidence heuristic can replace interaction in collective decision-making. Consciousness & Cognition. (2014). 26:13-23 published - 2014

Stolte, M.J., Bahrami, B., Lavie, N., High perceptual load leads to both reduced gain and broader orientation tuning Journal of Vision. (2014). 14:9 published - 2014

Mahmoodi A, Bang D, Ahmadabadi MN, Bahrami B Learning to Make Collective Decisions: The Impact of Confidence Escalation. PLoS ONE (2013). 8(12): e81195. published - 2013

Ditye, T, Kanai, R., Bahrami, B., Muggleton, N.G., Rees, G., Walsh, V. Rapid changes in brain structure predict improvements induced by perceptual learning. Neuroimage. (2013) 81:205-12. published - 2013

Cullen, H., Kanai, R., Bahrami, B., & Rees, G. Individual differences in anthropomorphioc attributions and human brain structure. Soc Cogn Affect Neurosci. (2013). 9(9) 1276-80. published - 2013

Apthorp, D., Schwarzkopf, D.S., Kaul, C., Bahrami, B., Alais, D., Rees, G. Direct evidence of motion streaks in human visual cortex. Proc. R. Soc. B (2013). 280(1752):20122339. published - 2013

Gialie-Dotan, S., Kanai, R., Bahrami, B., Rees, G., Saygin, A. P. Neuroanatomical correlates of biological motion detection. Neuropsychologia (2013) 51(3) 457-63 published - 2013

Sandberg, K., Barnes, G., Kanai, R., Bahrami, B., Overgaard, M., Rees, G. (2013) Early visual response predicts conscious face perception within and between subjects during binocular rivalry. Journal of Cognitive Neuroscience published - 2013

Kanai, R., Bahrami, B., Duchaine, B., Janik, A., Banissy, M., Rees, G. (2012) Brain structure links loneliness to social perception. Current Biology. doi: 10.1016/j.cub.2012.08.045. published - 2012

Konstantinou, N., Bahrami, B., Rees, G., Lavie, N. (2012) Visual short-term memory load reduces retinotopic response to contrast. Journal of Cognitive Neuroscience published - 2012

Bahrami, B., Didino, D., Frith, C., Butterworth, B., Rees, G. Collective Enumeration. (2012) J Exp Psychol Hum Percept Perform 39(2):338-347. published - 2012

Stewart L, Ajina A, Getov S, Bahrami B, Todorov A, Rees G. (2012) Unconscious evaluation of faces on social dimensions. Journal Experimental Psychology: General.doi: 10.1037/a0027950 published - 2012

Bahrami, B., Olsen, K., Bang, D. Roepstorff, A., Rees, G. and Frith, C. (2012) What failure in collective decision-making tells us about metacognition. Philosophical Transactions of Royal Society B. vol. 367 no. 1594 1350-1365 published - 2012

Fusaroli, R., Bahrami, B, Olsen, K., Roepstorff, A., Rees, G., Frith, C., Tylén K. (2012) Coming to Terms: Quantifying the Benefits of Linguistic Coordination. Psychological Science. 23(8):931-9. published - 2012

Wright, ND, Bahrami, B., Johnson, E., Di Malta, G., Rees, G., Frith, CD., Dolan RJ. (2012) Testosterone disrupts human collaboration by increasing egocentric choices. Proceedings of the Royal Society B. Epub: February 1, 2012, doi:10.1098/rspb.2011.2523 published - 2012

Campbell-Meiklejohn, DK., Kanai, R., Bahrami, B., Bach, DR., Dolan, RJ., Roepstorff A., & Frith CD. (2012) Structure of orbitofrontal cortex predicts social influence. Current Biology. 22(4): R123-R124. published - 2012

Bahrami, B., Olsen, K., Bang, D., Roepstorff, A., Rees., G. & Frith, C. (2012). Together, slowly but surely: the role of social interaction and feedback in the build-up of benefit in collective decision-making. JEP:HPP. 2012 Feb;38(1):3-8. published - 2012

Zokaei, N., Gorgoraptis, N., Bahrami, B., Bays, P. M., & Husain, M. (2011). Precision of working memory for visual motion sequences and transparent motion surfaces. Journal of Vision, 11(14):2,1–18, doi:10.1167/11.14.2. published - 2011

Kanai, R., Bahrami,B., Roylance, R., Rees, G. (2011) Online social network size is reflected in human brain structure. Proc Biol Sci. Apr 7;279(1732):1327-34. Epub 2011 Oct 19. published - 2011

Bahrami, B., Frith, C. (2011) Interacting Minds: A Framework for Combining Process- and Accuracy-Oriented Social Cognitive Research. Psychological Inquiry. 22(3): 183-6. published - 2011

Cohen Kadosh, R., Bahrami, B, Walsh, V., Butterworth, B., Popescu, T., Price, C.J. (2011). Specialization in the human brain: the case of numbers. Front. Hum. Neurosci. 5:62. doi: 10.3389/fnhum.2011.00062. published - 2011

Kanai, R., Dong, M., Bahrami, B., Rees, G. (2011). Distractibility in daily life is reflected in the structure and function of human parietal cortex. Journal of Neuroscience. 31(18): 6620-6626. published - 2011

Sandberg, K., Bahrami, B., Lindeløv, J., Overgaard, M., & Rees, G. (2011) The impact of stimulus complexity and frequency swapping on stabilization of binocular rivalry. Journal of Vision 11(2):6,1-10. doi: 10.1167/11/2/6 published - 2011

Kanai, R., Carmel, D., Bahrami, B., Rees, G. (2011) Structural and functional fractionation of right superior parietal cortex in bistable perception Current Biology 21(3):R106-R107. published - 2011

Meteyard, L., Rodriguez, S., Bahrami, B., Vigliocco, G. Beyond the current state of the art: a review of embodiment and the neuroscience of semantics. Cortex .DOI: 10.1016/j.cortex.2010.11.002. published - 2011

Harris, J. J., Schwarzkopf, D. S., Song, C., Bahrami, B., Rees, G. (2011) Contextual illusions reveal the limit of unconscious visual processing. Psychological Science. 22(3):399-405. published - 2011

Kanai, R., Bahrami, B., Rees, G. (2010) Human parietal cortex structure predicts the individual differences in perceptual rivalry. Current Biology. 20: 1626-30. published - 2010

Bahrami, B., Olsen, K., Latham, P., Roepstorff, A., Rees, G., Frith, C. (2010). Optimally interacting minds. Science. 329: 1081-1085. published - 2010

Vetter, P., Butterworth, B. and Bahrami, B. (2010) A candidate for the attentional bottleneck: Set-size Specific Modulation of Right TPJ during Attentive Enumeration. Journal of Cognitive Neuroscience 23:1-9 published - 2010

Bueti, D., Bahrami, B., Walsh, V. and Rees, G. (2010) Representation of temporal expectations in human primary visual cortex. Journal of Neuroscience 30(12):4343-4352. published - 2010

Bahrami, B., Vetter, P., Spolaore, E., Pagano, S., Butterworth, B., Rees, G. (2010) Unconscious numerical priming despite interocular suppression Psychological Science 21(2): 224-233. published - 2010

Vetter, P., Butterworth, B., and Bahrami, B. (2008) Modulating attentional load affects numerosity estimation: Evidence against a pre-attentive subitizing mechanism. PLoS ONE. published - 2008

Meteyard, L., Zokaei, N., Bahrami, B. & Vigliocco, G. (2008) Visual motion interferes with lexical decision on motion words. Current Biology 18(17), R732-R733. published - 2008

Bahrami, B., Carmel, D., Walsh, V., Rees, G., Lavie, N. (2008). Spatial attention can modulate unconscious orientation processing. Perception. 37(10):1520-8 published - 2008

Bueti,D., Bahrami,B., Walsh,V. (2008) Sensory and association cortex in time perception. Journal of Cognitive Neuroscience 20: 1054-1062. published - 2008

Kaul, C., Bahrami, B. (2008). Subjective experience of motion or attentional selection of a categorical decision. Journal of Neuroscience 28(16), 4110-4112. published - 2008

Bahrami, B., Carmel, D., Walsh, V., Rees, G., & Lavie, N. (2008). Unconscious orientation processing depends on perceptual load. Journal of Vision, 8(3):12, 1-10, doi:10.1167/8.3.12. published - 2008

Bahrami, B. Lavie, N. and Rees, G. (2007) Attentional load modulates responses of human primary visual cortex to invisible stimuli. Current Biology 17, 509-513. [See also: Braun, J. (2007) Attending the invisible. Current Biology 17, R202-3]. published - 2007

Meteyard,L., Bahrami,B., Vigliocco,G. (2007). Motion detection and motion verbs: Language affects low-level visual perception. Psychological Science 18(11), 1007-1013. published - 2007

Bahrami, B., Seyedsadjadi, R., Babadi, B., Noroozian, M. (2005). Brain complexity increases in mania. NeuroReport 16, 187-191. published - 2005

Bahrami, B. (2003). Object property encoding and change blindness in multiple object tracking. Visual Cognition 10(8), 949-963. published - 2003

Bahrami, B. (2008) Attention without awareness. Dissertation for Doctorate of Philosophy (Ph.D.) Institute of Cognitive Neuroscience. University College London. London, UK dissertations - 2008

Bahrami, B. (2003) Quantitative electroencephalography (qEEG) patterns in mania: Topographic Brain mapping. Medical Doctorate Dissertation. Tehran University of Medical Sciences, Tehran IRAN dissertations - 2003