Elizabeth Spelke is the Marshall L. Berkman Professor of Psychology at Harvard University. She previously taught at MIT, Cornell University, and the University of Pennsylvania after studying at Harvard, Yale and Cornell. Spelke studies the origins and nature of knowledge of objects, number, geometry, persons and social relationships through research on human infants, children, and adults. A member of the National Academy of Sciences and the American Academy of Arts and Sciences, her honors include the Distinguished Scientific Contribution Award of the American Psychological Association and the William James Award of the American Psychological Society.