| Asst Prof Georgios Christopoulos
Assistant Professor
Division of Strategy, Management and Organisation
College of Business (Nanyang Business School)
Email: CGEORGIOS@ntu.edu.sg
Phone: (+65)6790 5746
Office: S3-B2B-64 |
| Education |
- PhD in Cognitive Neuroscience University of Cambridge 2008
- MSc in Economic and Organisational Psych Panteion University 2002
- Bachelor in Psychology Athens Panteion University 1998
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| Biography |
*Update*: Please go to https://sites.google.com/site/labdeon/home for my lab webpage
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I hold a PhD from University of Cambridge in cognitive neuroscience of human decision making. My background is in psychology (B.Sc.) and economic psychology (M.Sc). During my studies at Cambridge we identified various brain responses characterizing decision making under risk. Specifically, a signal at an area called right DLPFC changed according to differences in individual’s risk aversion (Journal of Neuroscience, 2009). Using brain signals we were able to predict individual choices on a trial-by-trial basis. In other studies (PNAS, 2009; JofN, 2010) we identified how the brain distorts value and probabilities. Following Cambridge I moved to Baylor College of Medicine and then to Virginia Tech to work with Brooks King-Casas at the Laboratory for Interpersonal Decision Making, where I explored neural correlates of social decision making in normal populations, the effects of pharmacology on social learning and learning parameters as influenced by psychopathology and addiction. |
| Research Interests |
*Update*: Please go to https://sites.google.com/site/labdeon/home for my lab webpage
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Broadly, I am interested in exploring the mechanisms that describe and/or affect behavioral and neuronal responses while humans make decisions, especially in social settings. This is of course a very general question that encompasses very diverse topics such as:
- Individual decision making (deciding on the absence of social information. Risk is one of my main interests)
- Social decision making and strategic interactions (deciding while other agents are socially visible and present: allocation of resources; competition and cooperation, learning)
- Organizational Neuroscience (organizations are the ecology of the modern human; I am interested in how the structure of organizations influences biology and vice versa)
Coming to Singapore and NBS I found an environment with outstanding expertise in Cultural Psychology; my aim is to integrate this expertise with my interests.
Methods
Special emphasis should be given to the methods. I try to integrate different approaches aiming in exploring mechanisms while moving away from simple descriptive approaches, which while interesting are not anymore adequate to help us understand and predict behavior. To that aim I use:
- Behavioral experiments and game-theoretic inspired approaches modeling social interactions and decision making.
- Psychophysics
- Computational Modeling
- Biological and genetic measures (eye-tracking, skin conductance etc)
- Functional Magnetic Resonance Imaging to encode brain responses
1. Christopoulos G, Kokkinaki F, Harvey N., Sevdalis N, (Accepted) Paying for no reason? (Mis-)perceptions of product attributes in separate versus joint product evaluation. Journal of Economic Psychology
2. Christopoulos GI, Tobler pn. Bossaerts, P, Dolan RK, Schultz W (2009) Neural correlates of value, risk and risk aversion contributing to decision making under risk. Journal of Neuroscience, Oct 7, 2009, 29(40):12574-12583.
3. Tobler PN, Christopoulos GI, O'Doherty JP, Dolan RJ, Schultz W.(2009) Risk-dependent reward value signal in human prefrontal cortex. PNAS U S A. Apr 28;106(17):7185-90.
4. Tobler PN, Christopoulos GI, O'Doherty JP, Dolan RJ, Schultz W. (2008) Neuronal distortions of reward probability without choice. Journal of Neuroscience. Nov 5;28(45):11703-11. |
| Selected Publications |
- Christopoulos GI & Hong Y. (2013). Turning two uninvited guests into prominent speakers: toward a dynamic culture neuroscience. Psychological Inquiry, 24(1), 20-25.
- Lauharatanahirun* N, Christopoulos* GI, King-Casas B. (2012). Neural computations underlying social risk sensitivity. FRONTIERS IN HUMAN NEUROSCIENCE, 6(213).
- Christopoulos G, Kokkinaki F, Harvey N., Sevdalis N. (2011). Paying for no reason? (Mis-)perceptions of product attributes in separate versus joint product evaluation. Journal of Economic Psychology, 32, 857-864.
- Christopoulos GI, Tobler PN, Bossaerts P, Dolan RK, Schultz W. (2010). Neural correlates of value, risk and risk aversion contributing to decision making under risk. Journal of Neuroscience, 29(40), 12574-12583.
- Christopoulos G. & King-Casas B. (2010, June ). Prediction errors during social resource allocation learning depend on social value orientation. Paper presented at Human Brain Mapping, Barcelona.
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