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Marco K Wittmann
PRINCIPAL INVESTIGATOR [email] [cv] [scholar] [bluesky]
Marco is Associate Professor and MRC Career Development Fellow at UCL's Department of Experimental Psychology and PI at the Max Planck UCL Centre for Computational Psychiatry. His research focuses on the cognitive and neural mechanisms of adaptive human behavior, particularly in social interactions. After completing his undergraduate degree in Germany and a Wellcome Trust-funded MSc and DPhil at Oxford, Marco conducted his postdoctoral work at Oxford and UCL. He established his current group in 2024. He combines computational modelling, neuroimaging, and brain stimulation in his research. His goal is to characterise and causally understand the latent mechanisms and brain processes that enable navigation of complex social environments.
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Yongling Lin
POSTDOCTORAL RESEARCH ASSOCIATE
Yongling completed her Ph.D. at Beijing Normal University in 2024, under the joint supervision of Marco at UCL. Yongling continues her collaboration with Marco as a postdoctoral researcher now. She is interested in understanding how people integrate information during social group decisions and the neural mechanisms underlying these processes. Her current work specifically explores how individuals perceive the sense of self and group dynamics within complex social contexts, and how these processes are affected by mental health. She uses computational models of behavior, M/EEG, fMRI, and brain stimulation techniques to study this.
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Shujun Yang
PHD STUDENT
Shujun completed her Research Master's in Psychology at the University of Amsterdam, where she studied the impact of feedback timing on social reinforcement learning. She then joined the Social Computational Neuroscience Lab as a research assistant to causally study social basis function with transcranial ultrasound stimulation (TUS). As a PhD student starting in 2025, she has continued her interests in exploring how people form latent representations to optimize social interactions. She employs a diverse set of methodologies, including behavioural experiments, computational modelling, M/EEG, fMRI, TUS and artificial intelligence.
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Karen Chan
MRES STUDENT
Karen is an MRes Cognitive Neuroscience student in the Social Computational Neuroscience Lab. Her research investigates how transcranial ultrasound stimulation (TUS) modulates confidence judgments and social decision-making, combining brain stimulation, computational modelling, and behavioural experiments to explore the mechanisms underlying confidence and social behaviour.
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Yin Liang
MSC STUDENT
Yin is an MSc Cognitive and Decision Sciences student in the Social Computational Neuroscience Lab. Her research examines how individuals learn about their position within social hierarchies through experiences of winning and losing, and how such learning generalises to broader social contexts and future decision-making. She combines behavioural tasks with computational modelling to explore the cognitive processes that underlie social learning and adaptation.
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Alumni
Minyu Hao did her MSc project with Marco, Shujun and Yongling in 2024/25. She was interested in how reinforcement learning mechanisms contribute to learning about one’s own place in a social hierarchy and how experiences of winning and losing against other players generalise.
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Siqi Yi is a MSci Psychology student at UCL graduating in 2025. She was a research assistant in our lab in 2024, mainly working on the topic of social hierarchy and experimental paradigm development.
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Tianqi Zhan completed her Master of Research in Cognitive Neuroscience in our lab in 2024, working on multiple behavioural studies that investigated the relationship between social context and distortions of both decision-making and confidence reports. Tianqi went on to do her doctoral studies in the Metalab with Prof. Steve Fleming at UCL.