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Sheep and Goats One way of independently checking the results suggested by the hypnosis studies is to examine another form of suggestion, one that is in some ways stronger than conventional hypnotic induction. These are the subtle suggestions induced in us by our culture, our personal experiences, and the beliefs we learned from parents and schools. Together, culture, experience, and beliefs are potent shapers of our sense of reality. They are, in effect, hidden persuaders, powerful reinforcers of our sense of what is real. Our deep beliefs determine what we view as logically reasonable and what we consider to be morally and ethically self-evident. As we’ll explore in more detail in chapter 14, the hidden “hypnosis” of belief actually determines to a greater degree than is commonly known what we can consciously perceive. The hypnosis experiments showed that a slight tweaking of these beliefs resulted in a different performance. Thus, we would expect that people who accept the existence of ESP—for reasons of culture, experience, or belief—will score higher, on average, than people who do not. This turns out to be one of the most consistent experimental effects in psi research. It was whimsically dubbed the “sheep-goat” effect by psychologist Gertrude Schmeidler, who in 1943 proposed that one reason that confirmed skeptics do not report psi experiences is because they subconsciously avoid them.37 People who do report such experiences Schmeidler called the “sheep,” and the skeptics she called the “goats.” These studies typically had people fill in a questionnaire asking about their degree of belief in ESP and about any psi experiences they may have had. On the basis of their responses, participants were classified as either sheep or goats. All participants then took a standardized psi test, like an ESP card test, after which the results of the sheep and goats were compared. The idea was that the performance of the sheep would be significantly better than that of the goats. In 1993, psychologist Tony Lawrence from the University of Edinburgh, Scotland, reported a meta-analysis of all sheep-goat forced-choice experiments conducted between 1943 and 1993. Lawrence found seventy-three published reports by thirty-seven different investigators, involving more than 685,000 guesses produced by forty-five hundred participants. The overall results were strongly in favor of the sheep-goat effect, with believers performing better than disbelievers with odds greater than a trillion to one.
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