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Hand preference data were collected from 2818 subjects in 616 families using an adapted version of the Edinburgh Inventory. Population genetic analysis of these data and those from previous population studies, altogether encompassing 38,505 subjects in 8572 families, reveals evidence for generation differences, familial resemblance, and maternal effects.

A slightly modified version of the Ward Atmosphere Scale was administered to staff members and students at a residential center for mildly and moderately retarded adolescents. This report provides evidence for the applicability and usefulness of the instrument with this population. Differences between staff's perceptions of the environment and their image of an ideal environment, and between staff's and students' perceptions of the school environment were noted. The utility of the profile scores in identifying problem areas in such settings and as a non-threatening catalyst of increased staff-staff and staff-student communication and morale is discussed.