Two studies were conducted to analyze behaviors of staff and patients on a Pediatric Intensive Care Unit (PICU). In the first study, behavioral observation procedures were employed to assess patient state, physical position, affect, verbal behaviors, visual attention and activity engagement, and staff verbal behavior. On the average, one-third of the patients were judged to be conscious and alert but markedly nonengaged with their environment. In the second study, a member of the hospital staff provided alert patients with individual activities to determine whether a simple environmental manipulation traumatic and unfamiliar environment may result in a decrease of age-appropriate behaviors and an increase in problem behaviors, making good medical care harder to provide and transition to home more difficult (Haller, Talbert, and Dombro, 1967;Lindheim, Glaser, and Coffin, 1972). Despite the importance of the nonmedical problems associated with intensive care, very few studies deal with pediatric populations. Therefore, in referring to previous research the more extensive literature on adult ICU's must also be considered. For example, psychological problems associated with intensive care units have been grouped into four general areas (Kornfeld, 1971): (1) reactions to serious medical-surgical interventions