Michael D. Yapko

Born in 1954, Michael D. Yapko is an American clinical psychologist whose textbooks, clinical trainings and empirical reviews have helped define the modern professional study of hypnosis and suggestion. Beginning with the first edition of Trancework in 1984 and continuing through works such as Suggestions of Abuse (1994) and Mindfulness and Hypnosis (2011), Yapko has written primarily for licensed clinicians, examining how focused attention, expectation and interpersonal communication shape human perception and mood.

In Yapko’s account, hypnosis is not sleep, gullibility or the surrender of free will to a stage performer; it is a collaborative state of absorbed, selective attention in which a person temporarily sets aside competing distractions to examine new perspectives or rehearse constructive responses. Drawing on both Milton H. Erickson’s conversational methods and contemporary cognitive research, Yapko emphasizes how people’s "explanatory styles"—whether they frame a difficulty as global and permanent or specific and changeable—can narrow or widen the actions they consider possible.

Yapko’s writing is equally important for the ethical boundaries it draws. In the 1990s he documented how careless, leading questioning by untrained or overly zealous practitioners could generate confabulated memories, showing that suggestion carries real risks when used without professional restraint. He also distinguishes individualized clinical hypnosis—conducted within an informed-consent relationship by a qualified specialist—from generic, pre-recorded online audio tracks, which cannot assess a listener’s history, context or clinical needs.

For a lay reader, Yapko’s comparison of mindfulness and suggestion offers one clear reflective takeaway: every day, the stories you repeat to yourself act as informal suggestions about what to expect next. Noticing when an overgeneralized statement ("nothing here ever changes") narrows your attention allows you to replace it with a more accurate, bounded question about what can be done today.