Sander, a professor at Vrije Universiteit Amsterdam, specializes in clinical developmental psychology, with a focus on autism. He actively explores innovative approaches to assess social functioning variations in individuals with autism, aiming to improve care. Sander is a co-founder of the Netherlands Autism Register (NAR), a significant longitudinal cohort surveyed annually at www.nederlandsautismeregister.nl. He is committed to collaborative efforts and ensuring the individual dissemination of research outcomes.