For approximately eight months during 1931-1932, anthropologist Margaret Mead lived with and studied the Mountain Arapesh-a segment of the population of the East Sepik Province, Papua New Guinea. She found a culture based on simplicity, sensitivity, and cooperation. In contrast to the aggressive Arapesh who lived on the plains, both the men and the women of the mountain settlements were found to be, in Mead's word, maternal. The Mountain Arapesh exhibited...