Eighty-one children who showed language acquisition delay and normal electrophysiological thresholds were studied in order to assess the evolution of these children with delayed maturation of auditory pathways in Brainstem Evoked Responses Audiometry (BERA). The most probable etiology for the cases was studied, as well as the language evolution and the BERA abnormalities Both brainstem transmission time and language improved, however, few cases reached normal range results. Morphological alterations wich were more frequent for neonatal jaundice cases remained unchanged. The most frequent risk factors were perinatal anoxia, seizures and jaundice, being some factors overlapped in some cases. The study concluded that high-risk newborns and two-year-old children without even primitive verbal language should undertake BERA. The alteration of interwave intervals and I/V amplitude ratios points out the need of early intervention, once there is no favorable prognosis for the cases.