title: Problems and results of a shift to heterogeneous age groups in cottages at a boys home.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002653:Child Behavior Disorders / Q000628:therapy*; D006126:Group Processes; D006127:Group Structure; D006801:Humans; D008297:Male; D009825:Oklahoma; D010379:Peer Group; D012112:Residential Facilities