William B. Carey, M.D. is a pediatrician, who graduated from the Harvard Medical School in 1954 and did his specialty training at the Children's Hospital of Philadelphia. Subsequently he spent thirty-one years in primary pediatrics care mostly in Media, Pennsylvania. While in solo practice, he began his studies of child development and behavior, in particular of children's temperament differences. With a team of psychologists he developed for ages 1 month through 12 years a series of five temperament questionnaires, which have been widely used throughout the world and translated into many languages.
For the last twelve years he has been Clinical Professor of Pediatrics at the University of Pennsylvania, teaching developmental-behavioral pediatrics at the Children's Hospital of Philadelphia. His numerous publications on temperament include Coping with Children's Temperament: A Guide for Professionals (Basic Books, 1995) and Understanding Your Child's Temperament (Macmillan, 1997). His principal honors are the Aldrich Award in Child Development from the American Academy of Pediatrics and election to the Institute of Medicine of the National Academy of Sciences.