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Research interests:
His research focuses on the computational underpinnings and eco-evolutionary implications of human social learning and their relationships with group decision-making and collective behaviour. Using computational modelling and Bayesian statistical methods, coupled with online realtime behavioural experimentation, he is quantitatively approaching human social behaviour and group dynamics. He also uses mathematical models to study population dynamics and evolutionary games.
Background:
He is a Unit Leader (a sort of junior group leader) at the Computational Group Dynamics (COGNAC) Unit at RIKEN CBS, Tokyo. He obtained his PhD and MSc in Behavioural Science (2015 and 2012), and a BSc in Fisheries Science (2010) from Hokkaido University, Hakodate, Japan. He moved to the University of St Andrews, Scotland as the JSPS Overseas Research Fellow (2015-2017). Then he obtained a JSPS Research Fellowship (PD; 2017-2019) jointly working at both the University of St Andrews and the Graduate University of Advanced Studies (a.k.a. 'SOKENDAI'), Hayama, Japan, followed by joining the University of Konstanz in 2019, as a research scientist/Project PI at the Centre for the Advanced Study of Collective Behaviour.
Selected Publications
Selected Publications
A desire to conform to the group may help people make better decisions by encouraging them to gather information from others that mitigates their individual biases.
A desire to conform to the group may help people make better decisions by encouraging them to gather information from others that mitigates their individual biases.
Toyokawa W, Gaissmaier W. (2022). Conformist social learning leads to self-organised prevention against adverse bias in risky decision making. eLife. 11:e75308. (doi: 10.7554/eLife.75308)
Collective intelligence versus inflexible herding can be predicted on the basis of the task and the social learning strategies used.
Collective intelligence versus inflexible herding can be predicted on the basis of the task and the social learning strategies used.
Toyokawa W, Whalen A and Laland KN. (2019). Social learning strategies regulate the wisdom and madness of interactive crowds. Nature Human Behaviour 3(2):183-193. (doi: 10.1038/s41562-018-0518-x)
Sharing 5-star ratings weakened human collective intelligence in a gambling task
Sharing 5-star ratings weakened human collective intelligence in a gambling task
Toyokawa W, Kim H and Kameda T. (2014). Human collective intelligence under dual exploration-exploitation dilemmas. PLoS ONE 9(4): e95789. (doi: 10.1371/journal.pone.0095789)
Asocial explorative tendency did not correlated with social information use in humans
Asocial explorative tendency did not correlated with social information use in humans
Toyokawa W, Saito Y and Kameda T. (2017). Individual differences in learning behaviours in humans: Asocial exploration tendency does not predict reliance on social learning. Evolution and Human Behavior, 38 (3): 325-333. (doi:10.1016/j.evolhumbehav.2016.11.001)
Social foraging by predator can stabilise a potentially fluctuating biological community
Social foraging by predator can stabilise a potentially fluctuating biological community
Toyokawa W. (2017). Scrounging by foragers can resolve the paradox of enrichment. Royal Society Open Science, 4: 160830. (doi:10.1098/rsos.160830)
C.V.
C.V.
Research skills:
Behavioural/cognitive lab experimentation (z-Tree, PsychoPy)
Real-time interacting online experiment (Amazon's Mechanical Turk, PHP, Python, JavaScript and node.js)
Computational modelling and hierarchical Bayesian data analysis (R and Stan/JAGS)
Mathematical analysis (e.g., population dynamics; evolutionary game)
Teaching:
2019 - present: Experimental Practical Course (Online behavioural experiment on decision making and social influences) [code]
2019 - present: Data handling and visualisation in R
2019 - present: Seminar on Social Learning, Collective Behaviour, and Cultural Evolution
2019 - present: Seminar on Motivation and Emotion
2021: Guest lecturer at CHAIN Winter School [material]
Honors and Grants:
Association of Psychological Science William K. and Katherine W. Estes Fund. "COSMOS Konstanz 2023", Co-organising with Dr Charley M. Wu (University of Tübingen). (USD 12,000)
Association of Psychological Science William K. and Katherine W. Estes Fund. "Computational Summer school on Modelling Social and collective behaviour (COSMOS) in Konstanz", Co-organising with Dr Charley M. Wu (University of Tübingen). (USD 16,000 / EUR 13,810 from the Estes Fund; EUR 9,290 from the CASCB small Project grant)
The CASCB Large Project grant "Collective foraging and social search in vast decision-making spaces" (Co-PI with Professor Wolfgang Gaissmaier and Dr Hansjörg Neth; EUR 216,305)
Ausschuss für Forschungsfragen (AFF)H, University of Konstanz, "human swarm intelligence in risky decision-making:
" 2019 (€5,000)JPSP KAKENHI grant-in-aid for JSPS postdoctoral fellows 17J01559 (GBP £28,100/JPY ¥4,090,000), 2017 - 2019
Suntory Foundation Research Support April 2016 - March 2017 (¥1,000,000)
EHBEA student travel award - April 2014 (£100)
Young Researcher's Presentation Award, 6th conference of Human Behavior & Evolution Society Japan, 2013
Incentive Award, Hokkaido Psychological Society, 2013
Young Researcher's Presentation Award, 5th conference of Human Behavior & Evolution Society Japan, 2012
The Best-Poster Award, 31st conference of Japan Ethological Society, 2012
Research Fellow of the Japan Society for the Promotion of Science for Young Scientists, 2012-2014 (¥3,000,000)
Exemption from repayment, JASSO's scholarship loan, 2010-2011
Education:
2015 PhD Behavioural Science, Graduate School of Letters, Hokkaido University, Japan
2012 M.Sc. Behavioural Science, Graduate School of Letters, Hokkaido University, Japan
2010 B.Sc. Fisheries Science, School of Fisheries Science, Hokkaido University, Japan
Professional Position:
April 2023 - Present: Unit Leader at RIKEN CBS, TOYOTA Collaboration Center
March 2019 - Present: Research Scientist at the University of Konstanz, Germany.
Sept 2023 - Dec 2023: British Academy Visiting Fellow at University of Exeter, Cornwall (hosted by Professor Alex Mesoudi)
April 2017 - March 2019: JSPS Postdoctoral Fellow (University of St Andrews, UK; SOKENDAI (The Graduate University for Advanced Studies), Japan)
April 2015 - March 2017: JSPS Overseas Research Fellow (with Professor Kevin N. Laland lab, University of St Andrews)
April 2012 - March 2015: Doctoral Research Fellow of the Japan Society for the Promotion of Science (DC1)
Peer Reviewing Experiences:
Nature Human Behaviour
Nature Communications
Nature Communications Psychology
PLOS Computational Biology
Journal of Theoretical Biology
Physica A: Statistical Mechanics and Its Applications
Current Zoology
Frontiers in Applied Mathematics and Statistics
New Ideas in Psychology
PLoS ONE
Royal Society Open Science
Scientific Reports
Human-Agent Interaction
社会心理学研究
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