While many sources use the terms stream of consciousness and interior monologue as synonyms, the Oxford Dictionary of Literary Terms suggests, that "they can also be distinguished psychologically and literarily. In a psychological sense, stream of consciousness is the subject‐matter, while interior monologue is the technique for presenting it". And for literature, "while an interior monologue always presents a character's thoughts 'directly', without the apparent intervention of a summarizing and selecting narrator, it does not necessarily mingle them with impressions and perceptions, nor does it necessarily violate the norms of grammar, or logic- but the stream‐of‐consciousness technique also does one or both of these things."[7] Similarly the Encyclopædia Britannica Online, while agreeing that these terms are "often used interchangeably", suggests, that "while an interior monologue may mirror all the half thoughts, impressions, and associations that impinge upon the character's consciousness, it may also be restricted to an organized presentation of that character's rational thoughts".[8]
