How did Wilhelm Wundt's method of self-observation or introspection work?

Wilhelm Wundt's method of introspection involved having participants observe and report their own thoughts, feelings, and sensations in response to specific stimuli. This method aimed to study the structure of consciousness by breaking down mental processes into basic elements. Participants would describe their experiences in detail to trained observers, who would then analyze and categorize the data to uncover patterns and principles of mental functioning.