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Published on: January 12, 2018
Nonword Repetition and Language Outcomes in Young Children Born Preterm
Lisa D Gresch1, Virginia A Marchman2, Elizabeth C Loi1
1Department of Pediatrics, Stanford University School of Medicine, CA.
Insights
Phonological short-term memory, assessed via nonword repetition, is crucial for language development in both preterm and full-term children. Early assessment aids clinical practice for preterm infants.
Area of Science:
- Neuroscience
- Developmental Psychology
- Speech and Language Pathology
Background:
- Preterm birth can impact cognitive development, including phonological short-term memory.
- Phonological short-term memory is a key predictor of language acquisition.
Purpose of the Study:
- To investigate phonological short-term memory in preterm children.
- To explore the relationship between phonological short-term memory and later language skills in preterm and full-term children.
Main Methods:
- A nonword repetition task was administered to preterm (n=74) and full-term (n=60) children at 36 months.
- Standardized language assessments were conducted at 36 and 54 months.
- Regression analyses examined the predictive power of nonword repetition on language outcomes.
Main Results:
- Preterm children had higher rates of non-completion for the nonword repetition task.
- Among completers, no significant performance differences were found between preterm and full-term groups.
- Nonword repetition scores at 36 months significantly predicted language skills at 54 months for both groups.
Conclusions:
- Phonological short-term memory is vital for language development in all children, regardless of birth status.
- These findings support the clinical importance of assessing phonological short-term memory in preterm infants.
Purpose:
The aims of this study were to examine phonological short-term memory in children born preterm (PT) and to explore relations between this neuropsychological process and later language skills.
Method:
Children born PT (n = 74) and full term (FT; n = 60) participated in a nonword repetition (NWR) task at 36 months old. Standardized measures of language skills were administered at 36 and 54 months old. Group differences in NWR task completion and NWR scores were analyzed. Hierarchical multiple regression analyses examined the extent to which NWR ability predicted later performance on language measures.
Results:
More children born PT than FT did not complete the NWR task. Among children who completed the task, the performance of children born PT and FT was not statistically different. NWR scores at 36 months old accounted for significant unique variance in language scores at 54 months old in both groups. Birth group did not moderate the relation between NWR and later language performance.
Conclusions:
These findings suggest that phonological short-term memory is an important skill underlying language development in both children born PT and FT. These findings have relevance to clinical practice in assessing children born PT.
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