Highland tribal groups, most with their own local religious systems, probably number fewer than 100,000 persons.
The Khmer Loeu have been loosely described as animists, but most tribal groups have their own pantheon of local spirits. In general they see their world filled with various invisible spirits (often called yang), some benevolent, others malevolent. They associate spirits with rice, soil, water, fire, stones, paths, and so forth.
Sorcerers or specialists in each village contact these spirits and prescribe ways to appease them. In times of crisis or change, animal sacrifices may be made to placate the anger of the spirits. Illness is often believed to be caused by evil spirits or sorcerers. Some tribes have special medicine men or shamans who treat the sick. In addition to belief in spirits, villagers believe in taboos on many objects or practices. Among the Khmer Loeu, the Rhade and Jarai groups have a well developed hierarchy of spirits with a supreme ruler at its head.
