a) The term "phenomenology" was adopted by Jaspers from Edmund Husserl (1859-1938), a German philosopher and mathematician. Aside from the term "phenomenological psychopathology," however, Jaspers use of the term has nothing in common with Husserl's "phenomenology,” a philosophy based on the assumption that the "study of subjective experience of psychological events" is the science of sciences: the science that has preceded, and governs, all other sciences.

b)“Phenomenological analysis” in “phenomenological psychopathology” is different from “phenomenological analysis” in Binswanger's (1852-1929) "existentialist interpretative psychology," in which "morbid psychic experiences" are reformulated in terms of Heidegger's (1889 – 1976) "existentialist philosophy" with the basis presumption that this would render "pathologic realities" understandable.

c) Carl Schneider (1942) described three symptom complexes in schizophrenia, he referred to as the “thought withdrawal syndrome,” the “desultory syndrome,” and the “driveling syndrome,” and assumed that they corresponded with three closely related normal groups of mental functions which could be separately affected by the schizophrenic process.