In this essay I evaluate the legality of Karl Popper?s criticism against psychoanalysis, regarding this theory of Freud?s being pseudoscientific. Popper?s criticism is based on his theory of demarcation in which he states that an empirical theory must be possible to test by observations in order to be, as most important is, hypothetically possible to falsify based on other empirical statements ? often in the form of new found facts that contradict the original statement/theory. In purpose of assessing Popper?s criticism I perform a modified idea analysis, based on a book by Evert Vedung (1977).