THE LOGIC OF SLEEP-LEARNING: Page 27

Soviet Russia, as well as in the treatment of the mentally ill, and even more extensively in other fields of medicine. There, the treatment is based on Pavlov's discoveries. Most certainly the progress of sleep-learning can be raised, because everyone possesses an infinite capacity to learn; this, combined with sleep-learning will produce this result, just as a relatively high I.Q. can fall if the brain stagnates through inactivity. In this country, interest has been growing steadily, as are sales among manufacturers of equipment and recordings. It is fairly safe to assume that both will continue to grow. Certainly great strides have been made since the psychophone was marketed in 1920 for sleep-teaching. (This was a spring driven device that required winding by hand and was soon shown to be ineffective for extensive research.) The advances made by the electronic industry offer advanced equipment and recordings, noiseless and trouble free, that will further the actions and develop to an increasingly greater degree, the technique of sleep learning. Certainly the science of making useful the third of our lives normally spent in sleep, is worth investigating.