mentalistic

noun

1. the doctrine that objects of knowledge have no existence except in the mind of the perceiver.
2. the doctrine that human conduct reflects the operation of a nonmaterial principle.
3. any psychological theory that accepts as a proper subject of study the mental basis for human behavior.

noun

1. philosophy the doctrine that mind is the fundamental reality and that objects of knowledge exist only as aspects of the subject’s consciousnessCompare physicalism, idealism (def. 3) See also monism (def. 1), materialism (def. 2)