Behavioral assessment of psychiatric inpatients and normal controls across different environmental contexts

Objectively defined, publicly observable behaviors were time sampled for hospitalized psychiatric patients and normal controls in three distinct environmental contexts: lunch time, free time, and gym time. The behaviors sampled included body activity, extremity activity, proximity, social interactions, participation, visual scanning, laughing/smiling, and idiosyncratic behavior. Patient behaviors were recorded during both a drug-free baseline period and a subsequent medication period. The data suggest that consistent and reliable differences between patients and normals in most behaviors can be observed and that environmental context is an important determinant of these differences. Results are discussed in terms of their implications for assessment procedures and treatment decisions.