Key publications

• Witt, A., Toyokawa, W., Lala, K. N., Gaissmaier, W., & Wu, C. M. (2024). Humans flexibly integrate social information despite interindividual differences in reward. Proceedings of the National Academy of Sciences, 121(39), e2404928121. https://doi.org/10.1073/pnas.2404928121 [Press release] [日本語プレスリリース]
• Toyokawa W, and 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) [Code: https://github.com/WataruToyokawa/ToyokawaGaissmaier2021] [Press release] [eLife digest] [Shiny App demo]
• Kameda T, Toyokawa W, and Tindale RS (2022) Information aggregation and collective intelligence beyond the wisdom of crowds. Nature Reviews Psychology. (doi: https://doi.org/10.1038/s44159-022-00054-y) [Read-only link]
• Toyokawa W, Whalen A and Laland KN. (2019). Social learning strategies regulate the wisdom and madness of interactive crowds. Nature Human Behaviour, 3: 183-193. (doi: 10.1038/s41562-018-0518-x). [Free-access read-only link] [Press Release] [Behind the Paper] [Blog post on The Conversation][Interview at the Parsing Science Podcast] [Mathematica notebook archive]
• 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)

All publications

Journal articles

• [in Japanese] 豊川航. 文化進化と社会心理学：なぜ文化進化研究が重要なのか. 社会心理学研究 40(2), 55-57 (2024). (doi: 10.14966/jssp.sp2023-preface).
• Witt, A., Toyokawa, W., Lala, K. N., Gaissmaier, W., & Wu, C. M. (2024). Humans flexibly integrate social information despite interindividual differences in reward. Proceedings of the National Academy of Sciences, 121(39), e2404928121. https://doi.org/10.1073/pnas.2404928121 [Press release] [日本語プレスリリース]
• Toyokawa, W. Collective cognition and behaviour. Nat Hum Behav 7, 1612–1613 (2023). (doi: 10.1038/s41562-023-01683-w).
• Witt, A., Toyokawa, W., Lala, K., Gaissmaier, W., & Wu, C. M. (2023). Social learning with a grain of salt. In M. Goldwater, F. Anggoro, B. Hayes, & D. Ong (Eds.), Proceedings of the 45th Annual Conference of the Cognitive Science Society. Sydney, Australia: Cognitive Science Society. psyarxiv.com/c3fuq
• Toyokawa W, and 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) [Code: https://github.com/WataruToyokawa/ToyokawaGaissmaier2021] [Press release] [eLife digest] [Shiny App demo]
• Kameda T, Toyokawa W, and Tindale RS (2022) Information aggregation and collective intelligence beyond the wisdom of crowds. Nature Reviews Psychology. (doi: https://doi.org/10.1038/s44159-022-00054-y) [Read-only link]
• Laland KN, Toyokawa W and Oudman T. (2019) Animal Learning as a Source of Developmental Bias. Evolution and Development. (doi: https://doi.org/10.1111/ede.12311)
• Toyokawa W, Whalen A and Laland KN. (2019). Social learning strategies regulate the wisdom and madness of interactive crowds. Nature Human Behaviour, 3: 183-193. (doi: 10.1038/s41562-018-0518-x). [Free-access read-only link] [Press Release] [Behind the Paper] [Blog post on The Conversation][Interview at the Parsing Science Podcast] [Mathematica notebook archive]
• Kim H, Toyokawa W & Kameda T. (2019). How do we decide when (not) to free-ride? Risk tolerance predicts adaptation of cooperation levels in new settings. Evolution and Human Behavior, 40: 55-64. (doi:10.1016/j.evolhumbehav.2018.08.001)
• Muthukrishna M, Henrich J, Toyakawa W, Hamamura T, Kameda T, & Heine S J. (2018). Overconfidence is Universal? Elicitation of Genuine Overconfidence (Ego) Method Reveals Systematic Differences Across Domain, Task Knowledge, and Incentives in Four Populations. PLoS
  ONE, 13(8): e0202288. (doi: 10.1371/journal.pone.0202288)
• Toyokawa W. (2017). Scrounging by foragers can resolve the paradox of enrichment. Royal Society Open Science, 4: 160830. (doi:10.1098/rsos.160830)
• 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)
• Gregory A. Bryant, Daniel M.T. Fessler, Riccardo Fusaroli, Edward Clint, Lene Aarøe, Coren L. Apicella, Michael Bang Petersen, Shaneikiah T. Bickham, Alexander Bolyanatz, Brenda Chavez, Delphine De Smet, Cinthya Díaz, Jana Fančovičová, Michal Fux, Paulina Giraldo-Perez, Anning Hu, Shanmukh V. Kamble, Tatsuya Kameda, Norman P. Li, Francesca R. Luberti, Pavol Prokop, Katinka Quintelier, Brooke A Scelza, Hyun Jung Shin, Montserrat Soler, Stefan Stieger, Toyokawa W (27th), Ellis A. van den Hende, Hugo Viciana-Asensio, Saliha Elif Yildizhan, Jose C. Yong, Tessa Yuditha, and Yi Zhou (2016). Detecting affiliation in co-laughter across 24 societies. Proceedings of the National Academy of Sciences, 113 (17), 4682-4687. (doi: 10.1073/pnas.1524993113)
• 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)
• Toyokawa W and Kameda T. (2014). Experimental study on social learning and swarm intelligence effect in the ‘exploration-exploitation dilemma’. [in Japanese: “探索と収穫のジレンマ”における社会的学習と集合知効果の実験的検討 . 北海道心理学研究 第36号 1-14] [pdf]
• Toyokawa W and Kameda T. (2013). Toward a synthetic understanding of collective decision-making by humans and non-human animals. The Japanese Journal of Animal Psychology, 63, 2, 107-122. [in Japanese: ヒトと動物の「集団意思決定」をつなぐ. 動物心理学研究 第63巻 第2号 107-122][J-STAGE]
• Kameda T, Wisdom T, Toyokawa W and Inukai K. (2012). Is consensus-seeking unique to humans? A selective review of animal group decision-making and its implications for (human) social psychology. Group Processes & Intergroup Relations, 15, 673-689. (doi: 10.1177/1368430212451863)