Freud was not a psychologist. He was a psychoanalyst. The first one, in fact.В Psychoanalysis is considered to be a class of psychological study, as it studies how consciousness works (unconsciousness, specifically). But there is a massive difference between this line of thought and the scientific, experimental psychology. Even at the historical period Freud lived, when the study of mind and behavior was very limited, Wundt, scientific psychology's founder, had already produced much of his works.