The document discusses Edward B. Titchener's contributions to psychology, particularly his development of structuralism, which aimed to analyze consciousness into its basic components. It highlights his focus on introspection, stimulus error, and the examination of conscious experience, emphasizing the need for rigorous training in self-observation. Critiques of Titchener's methods and the structuralist movement are also addressed, pointing out the limitations and challenges in the application of introspective analysis.