The Mentawai people generally live in groups according to their respective tribes. Each tribe usually inhabits and has a specific village (langgai). In its later development, in a village there are usually two classifications, namely the village-opening tribe group
(si bakat langgai) and the immigrant tribe group
(si toi). Their villages are usually established along the river. The village-opening group has certain rights, especially in controlling land and the location of food sources in their residential environment. Members of immigrant descendants who want to open fields or build houses must ask permission from the clan leader of the village-opening descendants.
Language The Mentawai language is spoken in Monganpoula Village, North Siberut District; Maileppet Village, South Siberut District; and Sioban Village, Sipora District, and Makalo Village,
South Pagai,
Mentawai Islands Regency, West Sumatra Province. The Mentawai language consists of three dialects: (1) the North Siberut dialect, (2) the South Siberut dialect, and (3) the Sipora Pagai dialect. The North Siberut dialect is spoken in Monganpoula Village, North Siberut District. The South Siberut dialect is spoken in Maileppet Village, South Siberut District. The Sipora-Pagai dialect is spoken in Sioban Village, Sipora District, and Makalo Village, South Pagai District. The Sipora-Pagai dialect is the standard dialect because it has the widest geographical distribution and the largest number of speakers, and is located in the district government center. Based on dialectometric calculations, the percentage difference between the three dialects ranges from 51% to 69%. The Mentawai isolect is a language with a percentage difference ranging from 81% to 100% when compared to Batak and
Minangkabau.
Arts The development of Mentawai arts is generally related to various traditional ceremonies and daily life. Their art forms are largely based on appreciation of the surrounding nature, for example, imitations of the movements or sounds of hunted animals, etc. Vocal and dance arts developed according to ceremonial needs, such as for weddings and funerals. Dance and vocal arts are also part of the healing process by a shaman (sikerei). Today, these indigenous art forms are diminishing, as their development is increasingly limited to the Lua people.
Kinship System A uma can be inhabited by around 5-10 nuclear families, with some even having up to 20 families. These families occupy a uma based on paternal descent (patrilineal). Thus, a uma constitutes a patrilineal extended family unit. A kinship group whose members share a common patrilineal descent is called a muntogat. Each muntogat has a specific "uma" (family name) that serves as the center of its members' activities. == Clan ==