 Meinong’s psychological works are more concerned with the methodology of psychology and with what Brentano called “descriptive psychology” — a kind of classification or taking of an inventory of the mental furniture — than with “genetic psychology”, i.e., the experiment-based, causal theory of mental (and physiological) occurrences (cf. Antonelli 2018: 3–100). Stimulated by Twardowski (1894) but also in critical distance to this treatise, Meinong combined descriptive-psychological matters with epistemological and ontological themes in his essay “On Objects of Higher Order and Their Relationship to Internal Perception” (1899).