Brave New World Revisited - Aldous Huxley [37]
In the Psychological Bulletin for July, 1955, Charles W. Simon and William H. Emmons have analyzed and evaluated the ten most important studies in the field. All these studies were concerned with memory. Does sleep-teaching help the pupils in his task of learning by rote? And to what extent is material whispered into the ear of a sleeping person remembered next morning when he wakes? Simon and Emmons answer as follows: “Ten sleep-learning studies were reviewed. Many of these have been cited uncritically by commercial firms or in popular magazines and news articles as evidence in support of the feasibility of learning during sleep. A critical analysis was made of their experimental design, statistics, methodology and criteria of sleep. All the studies had weaknesses in one or more of these areas. The studies do not make it unequivocally clear that learning during sleep actually takes place. But some learning appears to take place in a special kind of waking state wherein the subjects do not remember later on if they had been awake. This may be of great practical importance from the standpoint of economy in study time, but it cannot be construed as sleep learning…. The problem is partially confounded by an inadequate definition of sleep.”
Meanwhile the fact remains that in the American Army during the Second World War (and even, experimentally, during the First) daytime instruction in the Morse Code and in foreign languages was supplemented by instruction during sleep — apparently with satisfactory results. Since the end of World War II several commercial firms in the United States and elsewhere have sold large numbers of pillow speakers and clock-controlled phonographs and tape recorders for the use of actors in a hurry to learn their parts, of politicians and preachers who want to give the illusion of being extemporaneously eloquent, of students preparing for examinations and, finally and most profitably, of the countless people who are dissatisfied with themselves as they are and would like to be suggested or autosuggested into becoming something else. Self-administered suggestion can easily be recorded on magnetic tape and listened to, over and over again, by day and during sleep. Suggestions from the outside may be bought in the form of records carrying a wide variety of helpful messages. There are on the market records for the release of tension and the induction of deep relaxation, records for promoting self-confidence (much used by salesmen), records for increasing one’s charm and making one’s personality more magnetic. Among