Original sentence: 91% of subjects who had been primed with questions about UFOs stated that they had interacted with aliens.Harvard University professor Richard McNally has found that many Americans who believe they have been abducted by aliens share personality traits such as New Age beliefs and episodes of sleep paralysis accompanied by hypnopompic hallucinations.Psychologist Stephen Jay Lynn conducted a simulated hypnosis experiment in 1994, asking patients to imagine they had seen bright lights and experienced lost time.The experiment led McNally to conclude, "Emotion does not prove the veracity of the interpretation.The individuals readily accepted the explanation and in laboratory experiments exhibited stress symptoms similar to those of Vietnam veterans suffering from post-traumatic stress disorder.These experiences prompted the individuals to visit therapists, who would frequently suggest alien abduction as a cause