Abstract
A developmental checklist of auditory functions (Tanaka and Shindo) after newborn hearing screening was examined. The checklist was made from the developmental growth chart of a normal hearing group. The development of the unilateral hearing impairment group was within the range of the mean ±1SD of the normal growth chart. Development in the mild hearing impairment group was within the range of the mean ±2SD of the normal growth chart. Development in the severe and profound bilateral hearing impairment cases was outside the range of the mean ±2SD of the normal growth chart. Development in moderately severe hearing impairment cases was outside the range of the normal growth chart, whereas that in cases of psychomotor retardation associated with moderately severe hearing impairment was within the range of the mean ±2SD of the normal growth chart.
