New research counters the prevailing theory that babies arrive in this world as a blank slate. Research using mini puppet plays at Yale University’s Infant Cognition Center, in Connecticut, shows that infants between six and 10 months old can consistently differentiate between helpful and unhelpful behaviors, indicating that humans are born with innate moral judgment. “Some sense of good and evil seems to be bred in the bone,” says Paul Bloom, a professor of psychology who led the study.