Dereistic thinking Dereistic means: Away from reality, undirected fantasy thinking. Jung wrote, “This is the basic activity of psychic life, this fantasy making", and he used the term “image” not from afterimage, something you've experienced or seen, but he says he takes it from poetic usage. Dereistic Thinking: An old descriptive term used to refer to thinking not in accordance with the facts of reality and experience and following illogical, idiosyncratic reasoning. This term is also used interchangeably with autistic thinking though they are not exact synonyms: dereistic emphasizes disconnection from reality and autistic emphasizes preoccupation with inner experience. Copyright Notice Adapted from Wikipedia. Text is available under the  Creative Commons Attribution-ShareAlike License 3.0 ; additional terms may apply.