Introspection
Introspection
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Introspection

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Introspection

Introspection is the examination of one's own conscious thoughts and feelings. In psychology, the process of introspection relies on the observation of one's mental state, while in a spiritual context it may refer to the examination of one's soul. Introspection is closely related to human self-reflection and self-discovery and is contrasted with external observation.

It generally provides a privileged access to one's own mental states, not mediated by other sources of knowledge, so that individual experience of the mind is unique. Introspection can determine any number of mental states including: sensory, bodily, cognitive, emotional and so forth.

Introspection has been a subject of philosophical discussion for thousands of years. The philosopher Plato asked, "...why should we not calmly and patiently review our own thoughts, and thoroughly examine and see what these appearances in us really are?" While introspection is applicable to many facets of philosophical thought it is perhaps best known for its role in epistemology; in this context introspection is often compared with perception, reason, memory, and testimony as a source of knowledge.

It has often been claimed that Wilhelm Wundt, the father of experimental psychology, was the first to adopt introspection to experimental psychology though the methodological idea had been presented long before, as by 18th century German philosopher-psychologists such as Alexander Gottlieb Baumgarten or Johann Nicolaus Tetens. Later writers have warned that Wundt's views on introspection must be approached with great care. Wundt was influenced by notable physiologists, such as Gustav Fechner, who used a kind of controlled introspection as a means to study human sensory organs. Building upon that use of introspection in physiology, Wundt believed introspection included the ability to directly observe one's own experiences (not just to logically reflect on them or speculate about them, though some others misinterpreted his views in this way). Wundt imposed exacting control over the study of introspection in his experimental laboratory at the University of Leipzig, making it possible for other scientists to replicate his experiments elsewhere, a development that proved essential to the development of psychology as a modern, peer-reviewed scientific discipline. Such exact purism was typical of Wundt. He prepared a set of instructions to be followed by every observer in his laboratory during studies of introspection: "1) the Observer must, if possible, be in a position to determine beforehand the entrance of the process to be observed. 2) the introspectionist must, as far as possible, grasp the phenomenon in a state of strained attention and follow its course. 3) Every observation must, in order to make certain, be capable of being repeated several times under the same conditions and 4) the conditions under which the phenomenon appears must be found out by the variation of the attendant circumstances and when this was done the various coherent experiments must be varied according to a plan partly by eliminating certain stimuli and partly by grading their strength and quality".

Edward Titchener was an early pioneer in experimental psychology and a student of Wilhelm Wundt. After earning his doctorate under Wundt at the University of Leipzig, he made his way to Cornell University, where he established his own laboratory and research. When Titchener arrived at Cornell in 1894, psychology was still a fledgling discipline, especially in the United States, and he was a key figure in bringing Wundt's ideas to America. However, Titchener misrepresented some of Wundt's ideas to the American psychological establishment, especially in his account of introspection which, Titchener taught, only served a purpose in the qualitative analysis of consciousness into its various parts, while Wundt saw it as a means to quantitatively measure the whole of conscious experience. Titchener was exclusively interested in the individual components that comprise conscious experience, while Wundt, seeing little purpose in the analysis of individual components, focused on synthesis of these components. Titchener's ideas formed the basis of the short-lived psychological theory of structuralism.

American historiography of introspection, according to some authors, is dominated by three misconceptions. In particular, historians of psychology tend to argue 1) that introspection once was the dominant method of psychological inquiry, 2) that behaviorism, and in particular John B. Watson, was responsible for discrediting introspection as a valid method, and 3) that scientific psychology completely abandoned introspection as a result of those critiques. However, introspection may not have been the dominant method. It was widely believed to be dominant because Edward Titchener's student Edwin G. Boring, in his influential historical accounts of experimental psychology, privileged Titchener's views while giving little credit to original sources. Introspection has been critiqued by many other psychologists, including Wilhelm Wundt and Knight Dunlap, who presented a non-behaviorist argument against self-observation. Introspection is still widely used in psychology, but now implicitly, as self-report surveys, interviews and some fMRI studies are based on introspection. It is not the method but rather its name that has been dropped from the dominant psychological vocabulary.

Partly as a result of Titchener's misrepresentation, the use of introspection diminished after his death and the subsequent decline of structuralism. Later psychological movements, such as functionalism and behaviorism, rejected introspection for its lack of scientific reliability among other factors. Functionalism originally arose in direct opposition to structuralism, opposing its narrow focus on the elements of consciousness and emphasizing the purpose of consciousness and other psychological behavior. Behaviorism's objection to introspection focused much more on its unreliability and subjectivity which conflicted with behaviorism's focus on measurable behavior.

The more recently established cognitive psychology movement has to some extent accepted introspection's usefulness in the study of psychological phenomena, though generally only in experiments pertaining to internal thought conducted under experimental conditions. For example, in the "think aloud protocol", investigators cue participants to speak their thoughts aloud in order to study an active thought process without forcing an individual to comment on the process itself.

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