Mother-child interactions: a foundation for language development.
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This study describes the speech/language development of 31 children who had been fitted with an endotracheal tube. Intubation in all cases occurred prior to 13 months of age and remained in situ for more than 3 months. These children were chosen from a pool of 130 potential subjects. Individuals diagnosed as having a primary neurological disorder, developmental delays, or mental retardation were excluded from the study. Demographic, birth, and medical factors that might also affect language outcome were documented. Standardized outcome measures were used to assess speech, language, and cognitive development of the children seen for testing. For the entire group of children, the overall measures of language functioning at follow-up were within normal limits and commensurate with cognitive ability. However, when a breakdown of results based on the children's ages was done, a clear pattern of language disability was noted in the expressive language of the oldest group of children tested. These findings raise questions about this group of children who were previously thought to develop speech and language skills normally.
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Locomotor strategies used before the acquisition of independent walking were studied in 424 infants. 270 were survivors of neonatal intensive care (the index group); the other 154 (controls) had had no perintal complications. Five forms of locomotion were distinguished: crawling on hands and knees, creeping on the stomach, bottom-shuffling, other, and none before independent walking. Crawling was the most common form of locomotion in both groups. A higher percentage in the index group were late crawlers (greater than 10 months), but similar proportions in both groups were bottom-shufflers or simply stood up and walked. One of the most important factors influencing locomotor strategies was asymmetry. Analysis of the influence of locomotor strategies on psychomotor and linguistic outcome up to five years showed no significant relationships within the index group. However, within the control group, infants who crawled had a statistically greater incidence of later motor delay, which is in contrast to the findings of other studies.
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