Part 12/16:
Hypnotizability—the capacity to respond to hypnotic induction—is measurable via standardized tests like the hypnotic induction profile. About 15% of adults are highly hypnotizable, with a score of 8-10 out of 10, while roughly one-third are resistant. The "eye roll" test is a simple, practical method: asking individuals to look upward while keeping their eyelids open, then closing their eyes. The position of the eyes during closure indicates susceptibility—white sclera suggests high hypnotizability, while iris visibility indicates lower responsiveness.