Lisa Feigenson is a prominent psychologist known for her research in cognitive development, particularly in the area of how children understand numbers and quantities. She is a professor at Johns Hopkins University and has contributed significantly to the field of developmental psychology through her studies on numerical cognition in infants and young children. Feigenson's work often explores how children learn to count and grasp the concept of numbers, which has implications for education and understanding cognitive growth. Her research has been published in various academic journals, making her a respected figure in the study of child development and cognitive science.