psychological investigations (Vols. 1 and 2 of Völkerpsychologie) to be the most fruitful path to adequate psychological research on the thought process. The principles of his cultural psychological methodology were only worked out later. These involved the analytical and comparative observation of objective existing materials, i.e. historical writings, language, works, art, reports and observations of human behaviour in earlier cultures and, more rarely, direct ethnological source material. Wundt differentiated between two objectives of comparative methodology: individual comparison collected all the important features of the overall picture of an observation material, while generic comparison formed a picture of variations to obtain a typology. Rules of generic comparison and critical interpretation are essentially explained in his Logik: "We therefore generally describe the epitome of the methods as interpretation that is intended to provide us with an understanding of mental processes and intellectual creation." Wundt clearly referred to the tradition of humanistic hermeneutics, but argued that the interpretation process basically also followed psychological principles. Interpretation only became the characteristic process of the humanities through criticism. It is a process that is set against interpretation to dismantle the interaction produced through psychological analysis. It examines external or internal contradictions, it should evaluate the reality of intellectual products, and is also a criticism of values and a criticism of opinions. The typical misconceptions of the intellectualistic, individualistic and unhistorical interpretation of intellectual processes all have "their source in the habitually coarse psychology based on subjective assessment." Principles of mental causality What is meant by these principles is the simple prerequisites of the linking of psychological facts that cannot be further extrapolated. The system of principles has several repeatedly reworked versions, with corresponding laws of development for cultural psychology (Wundt, 1874, 1894, 1897, 1902–1903, 1920, 1921). Wundt mainly differentiated between four principles and explained them with examples that originate from the physiology of perception, the psychology of meaning, from apperception research, emotion and motivation theory, and from cultural psychology and ethics. The Principle of creative synthesis or creative results (the emergence principle). "Every perception can be broken down into elemental impressions. But it is never just the sum of these impressions, but from the linkage of them that a new one is created with individual features that were not contained in the impressions themselves. We thus put together the mental picture of a spatial form from a multitude of impressions of light. This principle proves itself