Ana Hernandez completed her B.A. in Cognitive Science at UC Berkeley in 2024. As an undergraduate, she worked as a research assistant at the Whitney Lab for Vision and Action, where she studied visual emotional perception. This includes studying the individual differences between subject’s perception of emotions, and creating the Berkeley Emotion and Affect Tracking (BEAT) database, which she presented at the Vision Science Conference in 2024. Broadly, Ana is interested in how people perceive good choices, and how emotions play a role in decision-making. In her free time, she enjoys painting, baking, playing video games and gardening.

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Jason Leng got his BSc. in Optical Engineering at Zhejiang University (Hangzhou, China), and his MASc. in Electrical and Computer Engineering at Queen’s University (Kingston, ON). He then worked on the Canadian Biomarker Integration Network in Depression program with Dr. Sidney Kennedy, focusing on the dysfunction of reward system in depression and its association with antidepressant treatment outcome. In his free time, he likes reading science fiction and history books, cooking Chinese food, and playing board games.
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Debbie Yee received her B.S. in Brain and Cognitive Sciences at MIT in 2011, and earned her Ph.D. in Psychological & Brain Sciences at Washington University in St. Louis in 2019. She is interested in integrating computational, neuroimaging, and psychopharmacological approaches to investigate cognitive and neural mechanisms of motivational/affective processes and their interaction with cognitive control and decision-making across the human lifespan (e.g., healthy aging) and in mental disorders. In her spare time, she enjoys running half marathons, hiking, and both consuming and making interesting flavors of artisanal ice cream.
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Ivan Grahek completed his undergraduate studies at the University of Belgrade, Serbia, and received his PhD in psychology from Ghent University, Belgium. His research is focused on the relationship between motivation and cognitive control in healthy and depressed individuals. He combines behavioral, neural, and computational methods to investigate how components of motivation guide the decision-making process about the allocation of cognitive control.
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Mahalia Prater Fahey completed her BA in Cognitive Science at Pomona College (Claremont, CA). She comes to Brown from Harvard University where she recently worked as a research assistant on the Human Connectome Project in Development. She is broadly interested in the development of decision making strategies and the neural and environmental factors that shape these strategies. Outside of research Mahalia can be found cooking, at the beach, or Skyping with her dog in California.
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Yi-Hsin (Sheen) Su had his BSc. in Electrical Engineering and Physics (double-major) and his MSc. in Electronics Engineering at National Taiwan University (NTU). After working as an engineer for one and a half years, he decided to shift his career into understanding how human minds work with the ultimate goal to help those suffering from mental illness. His general research interest lies in computational psychiatry. Before coming to Brown, he worked at the Modeling and Informatics Lab with Dr. Tsung-Ren Huang at NTU, focusing on the nature of learning-rate bias in experience-based decision-making. In his free time, he likes baseball, scientific writing, and rock music. He has also been engaged in fighting stigma toward people with mental illness.

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Ziwei Cheng is set to begin her PhD studies in Fall 2023. Ziwei completed her BA in Psychology and Statistics at the University of Colorado Boulder. Before joining Brown, she worked at the Research on Affective Disorders and Development Lab and focused on neurocognitive markers for psychiatric health in adolescents and young adults. She is broadly interested in goal-directed behavior across motivational contexts and the translational utility of computational research.

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Henry Chan Lin is a senior at UC Berkeley majoring in Psychology, with a strong passion for neuropsychology, cognitive psychology, and neurodegenerative diseases. His mentroship under Professor Mark D’Esposito solidified his commitment to pursuing research as a career. In his free time, he enjoys creating music, playing instruments, and karoakeing to songs.

Crystal Xu is a second year undergraduate research assistant majoring in neurobiology under Sheen Su. She is particularly interested in decision making and the biological aspects that underlie the decision making process. In her free time she enjoys art and exploring new hobbies with friends.