Parental bilingualism is associated with slower cognitive development in very low birth weight infants.
BACKGROUND
Speech development is frequently impaired in very low birth weight (VLBW) infants. Few and controversial data have been published on concepts regarding the influence of bilingual education.


OBJECTIVE
The objectives of the current study were to assess the influence of parental bilingualism on speech development and neurodevelopmental outcome in low risk VLBW infants.


METHODS
Monocentric prospective controlled cohort study with standardized follow-up.


METHODS
We recruited 50 singleton VLBW infants each from monolingual and bilingual families as well as 90 term control infants. The infants were free of disease and congenital malformation.


METHODS
Griffiths scales of infant development at the corrected ages of 6 and 12 months, Bayley Scales of Infant Development II (BSID II) with 22 months.


RESULTS
In general, both bilingual and monolingual VLBW infants achieved age-specific milestones at the corrected age of 6, 12 and 22 months. However, bilingual VLBW infants achieved significantly lower scores than their monolingual peers in all cognitive subscales. The influence of maternal education on the neurodevelopmental outcome of the preterm infants was not significant; the subscales' correlation with socioeconomic or biological parameters was poor. However, a clear differentiation between social status and bilingual environment importance for speech development was not possible.


CONCLUSIONS
In the setting of the present investigation, parental bilingualism is associated with slower neurodevelopment in VLBW infants during the first 2 years of life.
Walch
Elisabeth
E
Charité - Universitätsmedizin Berlin, Campus Virchow-Klinikum, Department of Neonatology, Berlin, Germany. elisabeth.walch@charite.de
Chaudhary
Tanja
T
Herold
Birgit
B
Obladen
Michael
M
D016022:Case-Control Studies; D002675:Child, Preschool; D003071:Cognition; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D019102:Infant, Very Low Birth Weight / Q000254:growth & development*; D007804:Language Development; D008297:Male; D019303:Multilingualism; D011446:Prospective Studies