Pär Nyström is an Associate Professor in the Department of Psychology at Uppsala University, specializing in developmental psychology with a focus on younger children. He is affiliated with Uppsala Barn- och Babylab and collaborates with Karolinska Institutet (KI) on Projekt Småsyskon, a longitudinal study aimed at identifying early markers for autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD). His work bridges psychological theory with advanced technological approaches, including eye-tracking and pupillometry. Nyström's research interests center on early developmental processes, particularly in social cognition and attention. His work examines gaze following, social attention, and physiological responses in infants, with special focus on identifying early biomarkers for neurodevelopmental disorders. He investigates how cultural factors, family adversities, and genetic predispositions influence developmental trajectories. His research spans cross-cultural contexts, including studies in Sweden and Bhutan, demonstrating his commitment to understanding universal and culture-specific aspects of development. Analysis of Nyström's recent publications (2022-2025) reveals a strong focus on methodological innovation in developmental research. His work integrates computer vision, EEG hyperscanning, and pupillometry to create more robust assessment tools for infant cognition. A significant portion of his research explores early markers for autism, examining gaze behavior, pupillary responses, and motion processing as potential diagnostic indicators. His studies frequently employ longitudinal designs and incorporate behavioral genetics through twin studies. Nyström has also contributed to methodological advancements in social science research, developing analysis tools like TimeStudio to enhance research transparency and replicability. His work bridges technical innovation with developmental psychology, creating new pathways for early identification of developmental disorders. In addition to his research, Nyström has served as director of studies and contributed to organizational development within the university. His collaborative approach is evident through extensive co-authorship across multiple institutions, particularly with researchers at Karolinska Institutet and international partners. He actively participates in large-scale collaborative projects examining developmental markers across diverse cultural contexts.