This course provides an introduction to a variety of topics in cognitive development that are of contemporary interest. Major theories of cognitive development will be explored. We cover both classic and current experimental findings, and on how they address centuries-old debates surrounding the origin and nature of human knowledge. These topics currently include concepts and conceptual change in infants, core domains in conceptual development, the organization of action in infancy, the onset of symbolic functioning, memory development, the use of the imagination, theory formation as a model for conceptual change, and scientific reasoning.