Dr Sudhir Kumar on Instagram: "First published in 1935, "Sex and Temperament" is a fascinating and brilliant anthropological study of the intimate lives of three New Guinea tribes from infancy to adulthood. Focusing on the gentle, mountain-dwelling Arapesh, the fierce, cannibalistic Mundugumor, and the graceful headhunters of Tchambuli -- Mead advances the theory that many so-called masculine and feminine characteristics are not based on fundamental sex differences but reflect the cultural condi