n. the position that reality consists of two separate substances, defined by René Descartes as thinking substance (mind) and extended substance (matter). In the context of the mind–body problem, dualism is the position that the mind and the body constitute two separate realms or substances. Dualistic positions raise the question of how mind and body interact in thought and behavior. Compare monism. See also Cartesian dualism. —dualistadj., n.—dualisticadj.
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