Dr. Walker received her Ph.D. in Psychology from the University of California Berkeley in 2015. Dr. Walker’s primary emphasis is in the area of cognitive development, examining the various learning mechanisms that underlie knowledge acquisition and change. This work addresses basic questions about the nature of mental representations in human cognition, and she has authored a variety of publications on the early development of abstract reasoning. Her research carries far-reaching theoretical implications for developmental and cognitive sciences, as well as practical implications for education and artiﬁcial intelligence.