This manual deals with the complex problem of auditory and speech disorders, chiefly in children aged 1 to 6 years. Part I introduces the problem of auditory disorders and language development. Part II interprets the child's history. Part III evaluates the behavior symptomatology. Part IV gives the technique of examination. Part V outlines recommended procedures. Of 228 children referred in one year, 45% were deaf from ear deficiencies and 55% had emotional, aphasic, or mental deficiencies. Differentiation is accomplished by referrals to pediatrician, otolaryngologist, psychiatrist, and educator. The chapter summaries help to coordinate the content rapidly. Some of the summary discussion should be in the text. Individual chapters on peripheral deafness, aphasia, psychic deafness, and mental deficiency are very informative. The chapter on auditory capacity examination is very practical. The chapter on psychological examination rates the peripherally deaf nearest normal, then the psychologically deaf, the aphasic, and the mentally deficient.