The classic psychological research method of introspection, which was banished by behaviorism, is being revived and tested through modified implementation and analysis methods. It proves to be easily executable in the group-supported form of "dialogical" introspection, yielding very rich data and being effectively and convincingly evaluated within the framework of qualitative heuristics. Historical, theoretical, and methodological considerations prepare the execution of practical examples that will be presented and analyzed. New and additional fields of application are discussed, and more precise guidelines for implementation are provided.