Abstract
In this study, we conducted a field study involving patients and healthcare workers in an acute psychiatric unit with the aim of identifying the reasons for inconsistencies among measurements of sleep/awake patterns, the observations of nurses, and the reports of patients. After identifying the reasons for the inconsistencies, we designed an interactive caring system that merges multiple data sources to present a unified view of sleep/awake patterns. In so doing, we were able to leverage observations from nurses and the reports of patients to resolve prior inconsistencies.