P ediatric and clinical child psychologists have long provided consultation to pediatricians, nurses, social workers, and allied health professionals in children's hospitals and pediatric medicine clinics, as well as to parents and caregivers of children with health problems. Indeed, an early American psy chologist, Lightner Witmer, in 1897 provided consultation through his psycho logical clinic with parents, caregivers, and physicians on issues related to children's educational and educational concerns. Over time, multiple clinical collaborations developed between psychologist and pediatricians. When Logan Wright (1967) articulated the developing field of pediatric psychology, he included a distinctive focus for psychologists to be consultants to physicians and parents.The subsequent history of pediatric psychology presents a rich array of activ ities, roles, and functions most often involving the integration of science and