Stream of consciousness (psychology)

The metaphor "stream of consciousness" suggests how thoughts seem to flow through the conscious mind. Research studies have shown that humans only experience one mental event at a time, as a fast-moving mind-stream. The full range of thoughts one can be aware of forms the content of this "stream".

The term was coined by Alexander Bain in 1855, when he wrote in The Senses and the Intellect, "The concurrence of Sensations in one common stream of consciousness (on the same cerebral highway) enables those of different senses to be associated as readily as the sensations of the same sense". But the man who popularized it is commonly credited instead: William James, often considered the father of American psychology, used it in 1890 in The Principles of Psychology.