Perinatal risk factors and first-year vocalizations: influence on preschool language and motor performance.

ABSTRACT

Spontaneous vocalizations of nine children with neonatal risk factors were systematically tape-recorded during the first year of life, as were those of 20 randomly chosen children without such risk factors. All the children were also given a battery of tests measuring language, speech, intelligence and motor function at six years. Cumulated tape-recordings for the periods six to 11 months and six to 14 months showed the infants with risk factors to have a significant reduction in various reduplicated syllables and consonants during the first year compared to those without risk factors. At six years, six of the nine at-risk children had an abnormal language test, as did two of the 20 without neonatal risk factors. Children with abnormal language tests performed significantly more poorly on various motor tasks; they also had had significantly fewer reduplications and consonants during infant vocalizations than the children with normal language tests. Perinatal risk factors may delay the production of prelinguistic sounds, and analysis of vocalizations might help to identify children who are at risk for later language disorders.