Roy de Kleijn

Roy de Kleijn

Assistant professor @ Leiden University

Published (and not-quite-published) work

Papers

  • Dev, A., de Kleijn, R., & Mukherjee, S. (coming soon!). Prosocial behavior toward commercial robots in human-robot dictator games.
  • Tromp, J., Wurm, F., Lucchi, F., de Kleijn, R., & Nieuwenhuis, S. (2024). Phasic alertness generates urgency and amplifies competition between evidence accumulators. In bioRxiv (p. 2024.06.18.599522). [doi: 10.1101/2024.06.18.599522]
  • Heijnen, S., Sleutels, J., & de Kleijn, R. (2024). Model virtues in computational cognitive neuroscience. Journal of Cognitive Neuroscience, 36, 1683–1694. [doi: 10.1162/jocn_a_02183]
  • Raaijmakers, S., Bakker, R., Cremers, A., de Kleijn, R., Kouwenhoven, T., & Verhoef, T. (2024). Memory-augmented generative adversarial transformers. arXiv:2402.19218. [PDF] [link]
  • de Kleijn, R., Dev, A., & Mukherjee, S. (2024). Behavioral-economic games with commercially available robots. Companion of the 2024 ACM/IEEE International Conference on Human-Robot Interaction. [doi: 10.1145/3610978.3640575] [PDF]
  • Nas, E., & de Kleijn, R. (2024). Conspiracy thinking and social media use are associated with ability to detect deepfakes. Telematics and Informatics, 87, 102093. [doi: 10.1016/j.tele.2023.102093] [PDF]
  • Glas, R., de Kleijn, R., Regeer, E. J., Kupka, R., Koenders, M. A. (2024). Do you feel up when you go up? A pilot study of a virtual reality manic-like mood induction paradigm. British Journal of Clinical Psychology, 63, 105–117. [doi: 10.1111/bjc.12445] [PDF]
  • Goekoop, R., & de Kleijn, R. (2023). Hierarchical network structure as the source of hierarchical dynamics (power-law frequency spectra) in living and non-living systems: how state-trait continua (body plans, personalities) emerge from first principles in biophysics. Neuroscience & Biobehavioral Reviews, 154, 105402. [doi: 10.1016/j.neubiorev.2023.105402] [PDF]
  • Kouwenhoven, T., Verhoef, T., Raaijmakers, S., & de Kleijn, R. (2023). Modeling human sequential behavior with deep neural networks in emergent communication. Proceedings of the 45th Annual Meeting of the Cognitive Science Society, 1747–1754. [link]
  • Sen, D., de Kleijn, R., & Kachergis, G. (2023). Behavioral optimization in a robotic serial reaching task using predictive information. IEEE Transactions on Cognitive and Developmental Systems, 15, 1012–1019. [doi: 10.1109/TCDS.2022.3176459] [PDF]
  • Lloyd, B., Wurm, F., de Kleijn, R., & Nieuwenhuis, S. (2023). Short-term transcutaneous vagus nerve stimulation increases pupil size but does not affect EEG alpha power: A replication of Sharon et al. (2021, Journal of Neuroscience). Brain Stimulation, 16, 1001–1008. [doi: 10.1016/j.brs.2023.06.010] [PDF]
  • Kouwenhoven, T., de Kleijn, R., Raaijmakers, S., & Verhoef, T. (2022). Need for structure and the emergence of communication. Proceedings of the 44th Annual Conference of the Cognitive Science Society, 549–555. [PDF]
  • Kouwenhoven, T., Verhoef, T., de Kleijn, R., & Raaijmakers, S. (2022). Emerging grounded communicative systems between human and machine, inspired by human language evolution. Frontiers in Artificial Intelligence, 5:886349. [doi: 10.3389/frai.2022.886349] [PDF]
  • de Kleijn, R., Sen, D., & Kachergis, G. (2022). A critical period for robust curriculum-based deep reinforcement learning of sequential action in a robot arm. Topics in Cognitive Science, 14, 311–326. [doi: 10.1111/tops.12595] [PDF]
  • Goekoop, R., & de Kleijn, R. (2021). Permutation entropy as a universal disorder criterion: How disorders at different scale levels are manifestations of the same underlying principle. Entropy, 23, 1701. [doi: 10.3390/e23121701] [PDF]
  • van Dooren, R., de Kleijn, R., Hommel, B., & Sjoerds, Z. (2021). The exploitation–exploration trade-off in a foraging task is affected by mood-related arousal and valence. Cognitive, Affective, and Behavioral Neuroscience, 21, 549–560. [doi: 10.3758/s13415-021-00917-6] [PDF]
  • Goekoop, R., & de Kleijn, R. (2021). How higher goals are constructed and collapse under stress: a hierarchical Bayesian control systems perspective. Neuroscience & Biobehavioral Reviews, 123, 257–285. [doi: 10.1016/j.neubiorev.2020.12.021] [PDF]
  • van Hoek, L., Saunders, R., & de Kleijn, R. (2020). Evolving virtual embodied agents using external artifact evaluations. Proceedings of the 2020 Annual Benelux Conference on Artificial Intelligence and Machine Learning BNAIC/BeneLearn, 71–87. [PDF], winner of the BNAIC/BeneLearn best video award.
  • de Kleijn, R., Wijnen, M., & Poletiek, F. (2019). The effect of context-dependent information and sentence constructions on perceived humanness of an agent in a Turing test. Knowledge-Based Systems, 163, 794–799. [doi: 10.1016/j.knosys.2018.10.006]
  • de Kleijn, R., van Es, L., Kachergis, G., & Hommel, B. (2019). Anthropomorphization of artificial agents leads to fair and strategic, but not altruistic behavior. International Journal of Human–Computer Studies, 122, 168–173. [doi: 10.1016/j.ijhcs.2018.09.008]
  • Heijnen, S., de Kleijn, R., & Hommel, B. (2019). The impact of human-robot synchronization on anthropomorphization. Frontiers in Psychology, 9:2607. [doi: 10.3389/fpsyg.2018.02607] [PDF]
  • de Kleijn, R. (2019). Het begrijpen van kunstmatige intelligentie [Understanding artificial intelligence]. Arbo, 9, 28–31. [PDF]
  • de Kleijn, R., Kachergis, G., & Hommel, B. (2018). Predictive movements and human reinforcement learning of sequential action. Cognitive Science, 42, 783–808. [doi: 10.1111/cogs.12599] [PDF]
  • de Kleijn, R., Kachergis, G., & Hommel, B. (2018). Optimized behavior in a robot model of sequential action. Proceedings of the 40th Annual Conference of the Cognitive Science Society, 1615. [PDF]
  • de Kleijn, R., Kachergis, G., & Hommel, B. (2018). IQ and working memory predict plan-based sequential action learning. Proceedings of the 40th Annual Conference of the Cognitive Science Society, 1614. [PDF]
  • Mahdizadeh Hakak, A., Bhattacharya, J., Biloria, N., de Kleijn, R., & Shah-Mohammadi, F. (2016). Navigating abstract virtual environments: An EEG study. Cognitive Neurodynamics, 10, 471–480. [doi: 10.1007/s11571-016-9395-z]
  • de Kleijn, R., & Kindermans, G. (2016). De vrije wil? Natuurlijk bestaat die! Een discussie met Daniel Dennett. [Free will? Of course it exists! A discussion with Daniel Dennett]. De Psycholoog, 51(2), 26–31. [PDF]
  • Kachergis, G., de Kleijn, R., & Hommel, B. (2016). A dream model: Reactivation and re-encoding mechanisms for sleep-dependent memory consolidation. Proceedings of the 38th Annual Conference of the Cognitive Science Society, 1601–1606. [PDF]
  • Kachergis, G., Berends, F., de Kleijn, R., & Hommel, B. (2016). Human reinforcement learning of sequential action. Proceedings of the 38th Annual Conference of the Cognitive Science Society, 193–198. [PDF]
  • de Kleijn, R. & Hommel, B. (2015). Verliefd op een robot: Geschiedenis en toekomst van de mens-robotinteractie [In love with a robot: History and future of human-robot interaction]. De Psycholoog, 50(11), 48–56. [PDF]
  • Koenders, M. A., de Kleijn, R., Giltay, E. J., Elzinga, B. M., Spinhoven, P., & Spijker, A. T. (2015). A network approach to bipolar symptomatology in patients with different course types. PLOS ONE, 10(10): e0141420. [doi: 10.1371/journal.pone.0141420] [PDF]
  • Boonstra, E., de Kleijn, R., Colzato, L. S., Alkemade, A., Forstmann, B. U., & Nieuwenhuis, S. (2015). Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Frontiers in Psychology, 6:1520. [doi: 10.3389/fpsyg.2015.01520] [PDF]
  • Kachergis, G., Wyatte, D., O’Reilly, R. C., de Kleijn, R., & Hommel, B. (2014). A continuous-time neural model for sequential action. Philosophical Transactions of the Royal Society B: Biological Sciences, 369: 20130623. [doi: 10.1098/rstb.2013.0623] [PDF]
  • de Kleijn, R., Kachergis, G., & Hommel, B. (2014). Everyday robotic action: Lessons from human action control. Frontiers in Neurorobotics, 8:13. [doi: 10.3389/fnbot.2014.00013] [PDF]
  • Nieuwenhuis, S., & de Kleijn, R. (2013). The impact of alertness on cognitive control. Journal of Experimental Psychology: Human Perception and Performance, 39, 1797–1801. [doi: 10.1037/a0033980]
  • Nieuwenhuis, S., & de Kleijn, R. (2011). Consciousness of targets during the attentional blink: A gradual or all-or-none dimension? Attention, Perception, & Psychophysics, 73, 364–373. [doi: 10.3758/s13414-010-0026-1] [PDF]

Talks and poster presentations

  • Kouwenhoven, T., de Kleijn, R., Raaijmakers, S., & Verhoef, T. Emergence of grounded signal-meaning mappings in human–machine collaboration. SIGNLL Conference on Computational Natural Language Learning, Abu Dhabi, United Arab Emirates. December 7, 2022.
  • Heijnen, S., de Kleijn, R., & Sleutels, J. What is important in a computational model? NVP Winter Conference, Egmond aan Zee, Netherlands. April 29, 2022.
  • de Kleijn, R. Evolutionary algorithms in computational art. 20th Annual Summer Interdisciplinary Conference (ASIC), San Martino di Castrozza, Italy. July 14, 2021.
  • de Kleijn, R. & Hommel, B. Using deep neural networks to predict shooting incidents. NVP Winter Conference, Egmond aan Zee, Netherlands. December 19, 2019.
  • de Kleijn, R., Kachergis, G., & Hommel, B. Optimized sequential motor control in a virtual robot arm. NVP Winter Conference, Egmond aan Zee, Netherlands. December 14, 2017. (poster)
  • Mekern, V., de Kleijn, R., & Hommel, B. Level of striatal dopamine does not predict visual and cognitive search behavior. International Conference for Cognitive Neuroscience, Amsterdam, Netherlands. August 8, 2017. (poster)
  • van Dooren, R., de Kleijn, R., Mekern, V., Sellaro, R., & Hommel, B. No evidence for cross-domain priming from visual to cognitive search. International Conference for Cognitive Neuroscience, Amsterdam, Netherlands. August 6, 2017. (poster)
  • Heijnen, S., de Kleijn, R., & Hommel, B. The effect of human–robot synchronization on the tendency to anthropomorphize. International Conference for Cognitive Neuroscience, Amsterdam, Netherlands. August 5, 2017. (poster)
  • van Es, L., de Kleijn, R., Kachergis, B., & Hommel, B. Empathic response to cute and scary robots. NVP Winter Conference, Egmond aan Zee, Netherlands. December 19, 2015. (poster)
  • Boonstra, E., de Kleijn, R., Colzato, L. S., Alkemade, A., Forstmann, B. U., & Nieuwenhuis, S. Neurotransmitters as food supplements: the behavioral effects of GABA. NVP Winter Conference, Egmond aan Zee, Netherlands. December 19, 2015. (poster)
  • de Kleijn, R., Kachergis, G., & Hommel, B. A novel algorithm for action component substitution in robots. LIBC Member Meeting, Leiden, Netherlands. May 28, 2015. (poster)
  • Koenders, M. A., de Kleijn, R., Giltay, E. J., Elzinga, B. M., Spinhoven, P., & Spijker, A. T. Netwerkbenadering van symptoomstructuren bij bipolaire patiënten met een verschillend ziektebeloop [A network approach to bipolar symptomatology in patients with different course types]. Voorjaarscongres Nederlandse Vereniging voor Psychiatrie, Maastricht, Netherlands. April 1, 2015.
  • de Kleijn, R., Kachergis, G., & Hommel, B. Scaling up an ideomotor theory of goal representation. 1st International Convention of Psychological Science, Amsterdam, Netherlands. March 14, 2015.
  • Kachergis, G., de Kleijn, R., & Hommel, B. (2015). Should androids dream of electric sheep? Mechanisms for sleep-dependent memory consolidation. Proceedings of the 13th International Conference on Cognitive Modeling, 210–211.
  • Kachergis, G., Berends, F., de Kleijn, R., & Hommel, B. (2014). Reward effects on sequential action learning in a trajectory serial reaction time task. The Fourth Joint IEEE International Conference on Development and Learning and on Epigenetic Robotics.
  • Kachergis, G., Berends, F., de Kleijn, R., & Hommel, B. (2014). Trajectory effects in a novel serial reaction time task. Proceedings of the 36th Annual Conference of the Cognitive Science Society, 713–718.
  • de Kleijn, R., Kachergis, G., & Hommel, B. Reward effects in a sequential trajectory learning paradigm. 47th Annual Meeting of the Society of Mathematical Psychology, Québec City, Canada. July 18, 2014. (poster)
  • Schat, A., Goekoop, R., de Kleijn, R., van Noorden, M. S., Noom, M. J., Giltay, E. J., Vermeiren, R. R. J. M., & Zitman, F. G. The network structure of personality: A principal component analysis validated approach to network analysis. 26th APS Annual Convention, San Francisco, CA. May 24, 2014. (poster)
  • Kachergis, G., Berends, F., & de Kleijn, R. Reward schedule effects on sequential action learning: A trajectory serial response task. 26th APS Annual Convention, San Francisco, CA. May 24, 2014. (poster)
  • de Kleijn, R., Kachergis, G., & Hommel, B. Neurorobotics in cognitive science. LIBC Member Meeting, Leiden, Netherlands. May 22, 2014. (poster)
  • Berends, F., Kachergis, G., de Kleijn, R., & Hommel, B. A novel trajectory serial reaction time paradigm. NVP Winter Conference, Egmond aan Zee, Netherlands. December 20, 2013.
  • Kachergis, G., de Kleijn, R., & Hommel, B. A spiking neural model for sequential action control. 12th Annual Summer Interdisciplinary Conference (ASIC), Cortina, Italy. July 26, 2013.

Book chapters

  • Vegt, P. S., & de Kleijn, R. (2023). Cognitive effects of the anthropomorphization of artificial agents in human–robot interactions. In S. Mukherjee, V. Dutt, & N. Srinivasan (Eds.), Applied cognitive science and technology: Implications of interactions between human cognition and technology. Springer. [link] [PDF]
  • de Kleijn, R. (2022). Artificial intelligence versus biological intelligence: A historical overview. In B. Custers & E. Fosch Villaronga (Eds.), Law and artificial intelligence: Regulating AI and applying AI in legal practice. Springer. [link] [PDF]
  • de Kleijn, R., Kachergis, G., & Hommel, B. (2015). Robotic action control: On the crossroads of cognitive psychology and robotics. In H. Samani (Ed.), Cognitive robotics. Taylor & Francis. [link] [PDF]

Other publications

  • de Kleijn, R. (January 27, 2022). Come on, we don’t like our privacy that much… Pieter’s Corner.
  • de Kleijn, R. (December 23, 2014). Robots really are going to make our lives better. Leiden Psychology Blog.
  • de Kleijn, R. (June 3, 2014). Life, love, …and robots. LIBC Blog.
  • de Kleijn, R. (September 30, 2013). Winter blues? Leiden Psychology Blog.
  • de Kleijn, R. (July 16, 2013). Why aren’t robots doing my laundry yet? Leiden Psychology Blog.
  • de Kleijn, R., & Hommel, B. (2013). Biologically inspired object extraction algorithms. RoboHow.Cog workshop paper.
  • de Kleijn, R. (March 12, 2013). Measuring the unconscious mind. Leiden Psychology Blog.

Invited talks and media

  • de Kleijn, R. What maakt menselijke intelligentie zo bijzonder? [What’s so special about human intelligence?] Pearson Clinical Symposium: Intelligentie & Cognitie bij Kind en Jeugd in een Digitaal Tijdperk, Heemstede, Netherlands. October 17, 2024. (invited talk)
  • Nas, E., & de Kleijn, R. Deepfake classification. TeDCog Lab Talk, University of Bristol, Bristol, UK. April 25, 2024. (invited talk)
  • de Kleijn, R. Wat is generatieve AI? [What is generative AI?] Leeuwendaallezing, Rijswijk, Netherlands. February 18, 2024. (invited talk)
  • de Kleijn, R. Anthropomorphization in human–robot interaction. SAILS Lunch Seminar, December 18, 2023. (invited talk)
  • de Kleijn, R. Using large language models in psychology. Symposium AI and LLMs: Keeping the linguist in the loop, December 8, 2023. (invited talk)
  • de Kleijn, R. Villa VdB: Volgende stap in kunstmatige intelligentie: computer leert bordspel Diplomacy. NPO Radio 1, November 28, 2022. (radio interview)
  • de Kleijn, R. Evolutionary algorithms and evolutionary robotics. BERKS AIMS Seminar, Penn State University. September 28, 2022. (invited talk)
  • de Kleijn, R. EditieNL: Wat gaat er mis bij complotdenkers? RTL 4, September 22, 2022. (TV interview)
  • de Kleijn, R. Radio Weetlust: Kunstmatige intelligentie. Sleutelstad FM, September 5, 2022. (radio interview)
  • de Kleijn, R. Waarom vertrouwen mensen nieuwe technologie (niet)? [Why (don’t) people trust new technologies?] Symposium Nieuwe Technologie en Privacy, Leiden, Netherlands. January 19, 2022. (invited talk)
  • de Kleijn, R. What is artificial intelligence? Prometheus, Leiden, Netherlands. December 1, 2021. (invited talk)
  • de Kleijn, R. Artificial intelligence and psychology. SPS-NIP Lustrum Psychology Congress, Utrecht, Netherlands. November 12, 2021. (invited talk)
  • de Kleijn, R. Vraag het de wetenschapper: Kunnen we een robot een ei leren bakken? Nationale Wetenschapsagenda. September 8, 2021. (invited talk) [link]
  • de Kleijn, R. Man–machine collaboration in computational creativity. IHFC Seminar, IIT Delhi, Delhi, India. August 11, 2021. (invited talk)
  • de Kleijn, R. The future of AI is human. SAILS Online Talk Show, Leiden, Netherlands. December 15, 2020. [link]
  • de Kleijn, R. Fundamentals of artificial intelligence. SIB Lecture, Utrecht, Netherlands. November 19, 2019. (invited talk)
  • de Kleijn, R. AI in high-risk omgevingen. Intergo netwerkbijeenkomst, Amersfoort, Netherlands. November 19, 2019. (invited talk)
  • de Kleijn, R. Artificial vs. biological intelligence: can we learn from each other? SAILS Symposium: The future of AI is human, Museum Volkenkunde, Leiden, Netherlands. October 14, 2019. (invited talk)
  • de Kleijn, R. Artificial intelligence voor cocktailparty’s. HKU Centre for Creative Technology, May 22, 2019. (invited talk)
  • de Kleijn, R. Kunstmatige intelligentie: afkijken van natuurlijke intelligentie [Artificial intelligence: stealing from natural intelligence]. Publiekssymposium Kunstmatige Intelligentie, Leiden, Netherlands. April 4, 2019. (invited talk)
  • de Kleijn, R. & Poletiek, F. De taal van chatbot Mitsuku [The language of chatbot Mitsuku]. Science Cafe Leiden, Leiden, Netherlands. March 12, 2019. (invited talk)
  • de Kleijn, R. Cognitive robotics. Brain and Cognition fraction, University of Amsterdam, March 5, 2019. (invited talk)
  • de Kleijn, R. Verleden, heden en toekomst van de mens-robotrelatie [Past, present, and future of human-robot relationships]. Foundation the North Sea Region in an Urbanising World, Delft, Netherlands. October 9, 2018. (invited talk)
  • de Kleijn, R. Kunstmatige intelligentie: Vriend of vijand? [Artificial intelligence: Friend or enemy?] Leeuwendaallezing, Rijswijk, Netherlands. September 30, 2018. (invited talk)
  • de Kleijn, R. The dark side of science. Science Meets Business Cafe Leiden, April 12, 2018. (invited talk)
  • de Kleijn, R. Cognitieve robotica [Cognitive robotics]. Science Cafe Leiden, April 10, 2018. (invited talk)
  • de Kleijn, R. Wat zijn robots? [What are robots?] Tech it Out Kinderfestival, September 17, 2017. (invited talk)
  • de Kleijn, R. Nieuws en Co. NPO Radio 1, May 29, 2017. (radio interview)
  • de Kleijn, R. De invloed van digitalisering op de maatschappij [The digital society]. Science Cafe: Catena, Leiden, Netherlands. May 24, 2017. (invited talk)
  • de Kleijn, R. Robots en mens-robotinteractie [Robots and human-robot interaction]. Pakhuis de Zwijger: Artificial Touch, Amsterdam, Netherlands. May 22, 2017. (invited talk)
  • de Kleijn, R. De kennis van nu. NPO 2, April 6, 2017. (TV interview)
  • de Kleijn, R. Artificial intelligence: Fundamentals and techniques. Science Cafe Wageningen (Artificial intelligence: Rise of the thinking machines), Wageningen, Netherlands. March 30, 2017. (invited talk)
  • de Kleijn, R. Robots & Cognition? Science Meets Business Café, Leiden, Netherlands. December 8, 2016. (invited talk)
  • de Kleijn, R. De elektronische ander [The electronic other]. LIBC Publiekssymposium, Leiden, Netherlands. November 4, 2016. (invited talk)
  • de Kleijn, R. Kunstmatige intelligentie: verleden en heden [Artificial intelligence: past and present]. Discussieavond Jonge Democraten, Utrecht, Netherlands. March 21, 2016. (invited talk)
  • de Kleijn, R. Verliefd op een robot [In love with a robot]. Tegenlicht Meet Up: Tinder Love, Eindhoven, Netherlands. March 3, 2016. (invited talk)
  • de Kleijn, R. Met het oog op morgen. NPO Radio 1, June 15, 2015. (radio interview)
  • de Kleijn, R. Slimme en zelfbewuste robots [Smart and self-aware robots]. Van science fiction naar science [From science fiction to science], Leiden, Netherlands. May 28, 2015. (invited talk)
  • de Kleijn, R. Met het oog op morgen. NPO Radio 1, April 14, 2015. (radio interview)
  • de Kleijn, R. A continuous-time neural model for sequential action. Life Sciences Seminar, Centrum Wiskunde & Informatica (CWI) [National Research Institute for Mathematics and Computer Science], Amsterdam, Netherlands. January 27, 2015. (invited talk)
  • de Kleijn, R. De huishoudrobot is in aantocht. Q-Music, January 16, 2015. (radio interview)
  • de Kleijn, R. Robot als huishoudhulp. Unity FM, January 16, 2015. (radio interview)
  • de Kleijn, R. Carebots en menselijke emotie [Carebots and human emotion]. Discussion night Transparent Radiology, Leiden, Netherlands. December 11, 2014. (invited talk)
  • de Kleijn, R. The learning of sequential action: Results from a new paradigm and possible models. Artificial Intelligence Colloquium, University of Groningen, Faculty of Mathematics and Natural Sciences, Groningen, Netherlands. November 25, 2014. (invited talk)
  • de Kleijn, R. Robots in de zorg [Robots in healthcare]. U-meet 2014, The Hague, Netherlands. October 2, 2014. (invited talk and workshop)
  • de Kleijn, R. BNR Digitaal: Windows 10, UberPOP en wennen aan robots. BNR Nieuwsradio, October 1, 2014. (radio interview)
  • de Kleijn, R. Statistical motor learning in robots. Young Statisticians GMM, Utrecht, Netherlands. May 19, 2014. (invited talk)
  • de Kleijn, R., Kachergis, G., & Hommel, B. Deconstructing complex action: Statistical learning of hierarchical action. NVP Winter Conference, Egmond aan Zee, Netherlands. December 20, 2013.
  • Hommel, B., & de Kleijn, R. Verliefd op een robot [In love with a robot]. Nacht van Kunst en Kennis [Night of Art and Science], Leiden, Netherlands. September 20, 2013. (invited talk)
  • de Kleijn, R., Kachergis, G., & Hommel, B. Action representation in humans. RoboHow Second Joint Integration Workshop. Bremen, Germany. February 18, 2013.
  • de Kleijn, R., & Hommel, B. What psychology has to offer robotics. RoboHow Integration Workshop. Munich, Germany. July 17, 2012.
  • de Kleijn, R., Tsetsos, K., Usher, M., & McClelland, J. L. Modeling individual differences with stochastic information accumulation models. NVP Winter Conference, Egmond aan Zee, Netherlands. December 16, 2011.
  • de Kleijn, R., & McClelland, J. L. Computational modeling of decision making. Stanford University. December 1, 2011.
  • de Kleijn, R., & van der Does, A. J. W. A psychometric assessment of the LEIDS-R scale for cognitive reactivity. Minnesota Undergraduate Psychology Conference, St. Paul, MN. April 2008.

Service to the profession

  • Associate Editor of Behavior Research Methods (2024–present)
  • Secretary of Nederlandse Vereniging voor Psychonomie [Dutch Psychonomics Society] (2015–2021)
  • Treasurer of LEO [Leiden PhD Association] (2013–2014)
  • Chairman of LEO [Leiden PhD Association] (2012–2013)