Internal perception also fails as a method for scientific psychology. In the nature of the case, it must be casual and therefore unsystematic. It exc… - Kurt Danziger

In the case of psychology, of course, it is not only the concepts and methods of the discipline that undergo constant historical change, but the very subject matter itself. Human subjectivity, the reality behind the objects of psychological investigation, is itself strongly implicated in the historical process, both as agent and as product.

Here we are more likely to come across fields that are structured in an agonistic manner, fields which are characterized by deep divisions between alternative schools of thought rather than by the achievement of a general working consensus.

The term “introspective psychology” is misleading in that it covers a variety of diverging positions on the theory and practice of introspection. From the beginning there was a basic discrepancy between the British and the German philosophic tradition, the former relying more exclusively on introspection than the latter. Wilhelm Wundt’s advocacy and use of introspection was extremely circumscribed and essentially limited to simple judgments tied to external stimulation. During the first decade of the twentieth century some experimental psychologists, notably E. B. Titchener and the , greatly enlarged the scope of introspection, ushering in the brief vogue of “systematic introspection.” The latter never gained wide support in North America and was supplanted in Germany by developments that do not constitute “introspective psychology” in any precise sense.