Stream of consciousness is a narrative technique that mimics the unbroken flow of a character's inner thoughts.
The phrase comes from psychologist William James, who in 1890 argued that consciousness is not a chain of discrete ideas but a continuous, irregular flow. Modernist novelists turned that insight into a method. James Joyce's 'Ulysses' (1922) ends with Molly Bloom's 36-page unpunctuated monologue; Virginia Woolf's 'Mrs Dalloway' (1925) glides between minds within single sentences; Faulkner's 'The Sound and the Fury' (1929) gives an entire section to a man with cognitive disability. The technique demands enormous trust from readers — there are no signposts — but it gave fiction access to layers of perception that earlier prose could only paraphrase. Most contemporary literary novels use a softened version, free indirect discourse, that owes everything to this 1920s breakthrough. In fiction, the technique tries to render a character's unfiltered mental experience — sensory impressions, half-formed thoughts, memory fragments and associative leaps — without the tidying that conventional narration imposes. James Joyce's 'Ulysses' (1922) pushed the method furthest, especially in Molly Bloom's unpunctuated closing monologue, while Virginia Woolf used a subtler, more lyrical version in 'Mrs Dalloway' and 'To the Lighthouse,' often sliding between several characters' interior perspectives within a single paragraph. William Faulkner adapted the technique for American fiction in 'The Sound and the Fury,' giving each of four narrators — including one with a cognitive disability — a distinct, internally consistent rhythm of thought. The device is closely related to, but distinct from, 'free indirect discourse,' where a narrator's voice quietly merges with a character's without a full shift into first-person interiority — stream of consciousness is the more extreme, more immersive version of that same impulse to collapse the distance between reader and mind. The technique's influence extends well beyond literature: it shaped how filmmakers construct voiceover and memory sequences, and its core ambition — to represent thought as it actually happens, rather than as a tidy retrospective account — remains one of modernist fiction's most durable formal legacies, still visible in contemporary autofiction and unreliable-narrator storytelling.