Deirdre Barrett is an American author and psychologist known for her research on dreams, hypnosis and imagery, and has written on evolutionary psychology. Barrett is a teacher at Harvard Medical School, and a past president of the International Association for the Study of Dreams and of the American Psychological Association’s Div. 30, the Society for Psychological Hypnosis. She is editor-in-chief of the journal Dreaming: The Journal of the Association for the Study of Dreams and a consulting editor for Imagination, Cognition, and Personality and The International Journal for Clinical and Experimental Hypnosis.