Sophie Sweijen is a research assistant in the SYNC lab. She specifically assists in the Brainlinks project – a longitudinal study in which we follow 142 adolescents over the course of three years. The project focuses on the behavioral and neural development of prosocial behavior in young individuals. She also assists in the new Spinoza-funded line of research on the wellbeing of young individuals during the COVID-19 pandemic. Here, she coordinates the subproject focusing on the impact of COVID-19 on students’ wellbeing, self-oriented and prosocial behavior, and the use of social media. As of January 2021, Sophie will start her PhD-project in the SYNC lab, in which she will study social relations and contributions to society in adolescence.

Sophie completed her research master ‘Developmental Psychology’ at Leiden University in 2019. Her main interests lie in the social world of young individuals. During her studies, she assisted in multiple behavioral and fMRI studies investigating social learning, peer relations and risk taking in adolescence. For her master thesis, she focused on the developmental changes and individual differences in learning through social interactions.

Research interests: Adolescence – neural development – social relations – social influence – young adulthood

Vogelaar, B., Sweijen, S. W., & Resing, W. C. M. (2019). Gifted and average-ability children’s potential for solving analogy items. Journal of Intelligence, 7(3). doi:

Vogelaar, B., Resing, W. C. M., Stad, F. E., & Sweijen, S. W. (2019). Is planning related to dynamic testing outcomes? Investigating the potential for learning of gifted and average-ability children. Acta Psychologica, 196, 87-95. doi:

Harrewijn, A., Van der Molen, M. J. W., Verkuil, B., Sweijen, S. W., Houwing-Duistermaat, J. J., & Westenberg, P. M. (2018). Heart rate variability as candidate endophenotype of social anxiety: A two-generation family study. Journal of Affective Disorders, 237, 47-55. doi:

Sweijen, S. W. (2017). Beta and theta oscillatory dynamics in response to social evaluative feedback processing: Neural markers of anxious temperament? Student Undergraduate Research E-Journal!, 3, 241-244. doi: