This manual describes the screening procedures used to identify infants and children in need of further diagnosis and treatment for hearing loss in Minnesota. It is intended for use by Community Health Service agencies, school health programs, Head Start agencies, and voluntary agencies, and should be used as a post-training reference. Newborn hearing screening is briefly described. The bulk of the manual is devoted to the description of screening procedures for older infants and children. Section 1 presents procedures for infants and toddlers up to 3 years, including risk factors, hearing history, checklist of auditory and communication development, external inspection and otoscopy, and tympanometry. Section 2 discusses procedures for 3- to 5-year-olds, including hearing history, external inspection and otoscopy, tympanometry, pure tone screening, pure tone threshold screening, and play audiometry. Section 3 presents information on screening for school age children, including parent/teacher/child observation, external inspection and otoscopy, tympanometry, pure tone screening, pure tone threshold screening, and play audiometry. Appendices include a glossary, recommended screening frequency, environmental noise level check, check sheets for mechanical function and biologic calibration, and forms used in hearing screening programs. (KDFB)