The Trobriand Islands (today officially known as the Kiriwina Islands) are a 170 mi² archipelago of coral atolls off the eastern coast of New Guinea. They are situated in Milne Bay Province in Papua New Guinea. Most of the population of 12,000 indigenous inhabitants live on the main island of Kiriwina, which is also the location of the government station, Losuia. Other major islands in the group are Kaileuna, Vakuta and Kitava. The group is considered to be an important tropical rainforest ecoregion in need of conservation.
Although an understanding of reproduction and modern medicine is widespread in Trobriand Society, their traditional beliefs have been remarkably resilient, and the idea that in order to become pregnant women must be infused with spirits from the nearby island of Tuma (where people's spirits go after they die) is still a part of the Trobriand worldview. In the past, many held this traditional belief because the yam, a major food of the island, included chemicals (phytoestrogens and plant sterols) whose effects are contraceptive, so the practical link between sex and pregnancy was not very evident.
"The Trobrianders... whose culture traces family lineage through mothers rather than fathers." [Eds.] "The Trobrianders eat alone, retiring to their own hearths with their portions, turning their backs on one another and eating rapidly for fear of being observed." (Both quotes from an excerpt from Jenefer Shute's 1992 novel Life-Size in the book, Open Questions.)
Particularly interesting and unique to the Trobriand Islands are the linguistic aspect of the indigenous language, Kilivila. Drawing upon earlier work by Bronislaw Malinowski, Dorothy D. Lee's scholarly writings refer to "non-lineal codifications of reality." In such a linguistic system, the concept of linear progress of time, geometric shapes, and even conventional methods of description are lost altogether or altered. In her example of a specific indigenous yam, Lee explains that when the yam moves from a state of sprouting to ripeness to over-ripeness, the name for each object in a specific state changes entirely. This is because the description of the object at different states of development are perceived as wholly different objects. Ripeness is considered a "defining ingredient" and thus once it becomes over-ripe, it is a new object altogether. The same perception pertains to time and geometric shapes.
In 1943, troops landed on the islands as a part of Operation Cartwheel, the Allied advance to Rabaul. In the 1970s, some indigenous peoples formed anti-colonial associations and political movements.
Lineal and Non-Lineal Codifications of Reality by Dorothy Lee