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Cognitive development, temperament and behavior at 2 years as indicative of language development at 4 years in
N Sajaniemi1, L Hakamies-Blomqvist, J Mäkelä
1Helsinki University Hospital for Children and Adolescent Neurology, Lastenlinnantie 2, 00250 Helsinki, Finland. nina.sajaniemi@hus.fi
Insights
Early behavioral and cognitive factors predict language impairment in preterm infants. The Bayley MDI score was the strongest predictor, highlighting the importance of cognitive development for language outcomes.
Area of Science:
- Developmental Psychology
- Pediatric Neurology
- Speech-Language Pathology
Background:
- Preterm infants face increased risks for developmental challenges.
- Early identification of risk factors for language impairment is crucial for timely intervention.
- Temperament and behavior are recognized as potential early indicators of developmental trajectories.
Purpose of the Study:
- To investigate early temperamental, behavioral, and cognitive precursors of impaired language functioning in preschool-age preterm infants.
- To identify the most significant predictors of language impairment in this vulnerable population.
- To differentiate the predictive power of temperament versus behavioral characteristics.
Main Methods:
- Longitudinal study of 63 preterm infants (mean birth weight 1246g) born between 1989-1991.
- Exclusion of infants with major disabilities (cerebral palsy, mental retardation).
- Assessment of temperament (Toddler Temperament Questionnaire) and behavior (Infant Behavior Record) in infancy, and cognitive function (Bayley MDI score) at preschool age.
Main Results:
- 22% of preterm infants exhibited impaired language function at 4 years of age.
- Logistic regression identified the Bayley Mental Development Index (MDI) score as the best predictor of language impairment risk.
- Behavioral characteristics demonstrated a stronger association with subsequent language impairment than temperamental traits.
Conclusions:
- Cognitive assessment, particularly the Bayley MDI score, is a key predictor for identifying preterm infants at risk of language impairment.
- Infant behavior is a more significant factor than temperament in predicting later language difficulties.
- These findings underscore the importance of early behavioral and cognitive monitoring in preterm infants to facilitate early language intervention.
Abstract:
This study focuses on the early temperamental (TTQ = toddler temperament questionnaire), behavioral (IBR = infant behavior record), and cognitive precursors of impaired language functioning in preschool-age pre-terms infants. The study group consisted of 63 pre-term infants with a mean birth weight of 1246 +/- 437 g born in 1989-1991 in the University Central Hospital of Helsinki. Children with major disabilities (CP or mental retardation) were excluded. At the age of 4 years, 22% showed impaired language function. Logistic regression analysis showed that the Bayley MDI score was the best predictor in identifying an increased risk for language impairment. Behavioral characteristics were more strongly associated with subsequent language impairment than temperament.