Strauss and Lehtinen in a book published in 1947 described their observations of the behavior and psychologic deviations of what they called "brain-injured" children. By this term they referred to children showing abnormal behavior and learning patterns involving disturbances in perception. thinking (conception), language and emotional states, presumably the result of prenatal, natal or postnatal cerebral injuries or developmental interferences. The present book The Other Child was written by R. S. Lewis, a parent of one of these children who was selected by Strauss and Lehtinen because he was a professional writer and might best express in layman terms what they had attempted professionally in their 1947 book.