 The sexual division of labor is such that both males and females work in the extraction of sago flour, and each sex has specified tasks in the gardens, but only males hunt and build houses, and only females fish.Most fish is obtained through trade, with females exchanging sago flour for fish with members of river tribes on periodic market days, occurring once or twice a week.John Whiting's ethnography of the Kwoma, based on fieldwork conducted in 1936, was a groundbreaking effort to describe the socialization of children in a traditional, non-Western culture.