Psychoanalytic criticism in literary theory explores the unconscious mind's influence on literature. It examines authors' and characters' hidden desires, fears, and conflicts, drawing from Freud's theories of the id, ego, and superego to interpret symbols, imagery, and narrative structures. This approach emerged in the early 20th century, influenced by Freud's groundbreaking work. It gained prominence in mid-century, expanding beyond Freudian concepts to incorporate ideas from Jung and Lacan, offering new perspectives on the psychological dimensions of literary works.