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Review of late Holocene paleoenvironmental and cultural sequences from four regions of western North America shows striking correlations between drought and changes in subsistence, population , exchange, health, and interpersonal violence during the Medieval Climatic Anomaly (a.d. 800–1350). While ultimate cau-sality is difficult to identify in the(More)
Data are presented on 147 elementary students enrolled in special-education classes for the emotionally disturbed/behaviorally disordered, housed in self-contained classrooms within the regular public schools of a large urban district. Demographic, psychiatric, academic, and observational characteristics were assessed. From these data, inferences are made(More)
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