Professor Casey Lew-Williams is Chair of the Psychology Department at Princeton University, USA, with courtesy appointments in the Princeton AI Lab and the Princeton Neuroscience Institute. He directs the Princeton Baby Lab, where his students study how young children learn from the dynamics of their communicative environments. They use a combination of experimental, computational, descriptive, and social neuroscience approaches to study language learning in typical learners, children facing adversity, and children growing up in bilingual families. Their recent work has been funded by NIH and Wellcome Leap. He received his PhD in Psychology at Stanford University, was a postdoctoral researcher at the University of Wisconsin-Madison, and was previously on the faculty at Northwestern University in the Department of Communication Sciences and Disorders. He is a chief editor of Frontiers for Young Minds (a science journal for kids) and co-founder of ManyBabies (a collaborative group of 700 developmental scientists from around the world).