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Published on: August 25, 2014
Developmental trajectories from birth to school age in healthy term-born children
Elise Roze1, Lisethe Meijer, Koenraad N J A Van Braeckel
1Division of Neonatology, University Medical Center Groningen, Beatrix Children's Hospital, Hanzeplein 1, 9713 GZ Groningen, Netherlands. e.roze@bkk.umcg.nl
Insights
Motor development stability is low in healthy children from birth to school age. Early motor scores offer little predictive value for later cognitive functions like attention and memory.
Area of Science:
- Pediatric neurology
- Developmental psychology
- Neuroscience
Background:
- Motor development is crucial for overall child development.
- Understanding the stability of motor skills and their link to cognition is essential for early identification of potential issues.
Purpose of the Study:
- To assess the stability of motor development scores from birth through school age in healthy infants.
- To investigate the association between early motor development and later cognitive functions, including attention and memory.
Main Methods:
- A longitudinal prospective cohort study involving 77 healthy, term infants.
- Motor development assessed using standardized neurologic examinations and assessments at multiple time points (neonatal, early infancy, toddler, school age).
- Cognitive functions (attention, memory, intelligence) evaluated at toddler and school age using established psychometric tests.
Main Results:
- Motor development scores showed low stability across different developmental stages.
- Maternal socioeconomic status and verbal intelligence were significant predictors of sustained attention and verbal memory.
- Early motor test scores provided minimal additional predictive value for school-age motor and cognitive outcomes.
Conclusions:
- Motor development in healthy children is not highly stable from birth to school age.
- Maternal socioeconomic status and verbal intelligence are more significant factors for complex cognitive functions than early motor test performance.
Objective:
To determine the stability of the scores obtained on tests of motor development from birth until school age in healthy, term singletons and to determine if early motor scores are associated with more complex cognitive functions at school age, such as attention and memory.
Patients And Methods:
This longitudinal, prospective cohort study included 77 infants. The motor development of these infants was assessed during the neonatal period with Prechtl's neurologic examination; in early infancy with Touwen's neurologic examination and general movement assessment; at toddler age with Hempel's neurologic examination and the Psychomotor Developmental Index from the Bayley Scales of Infant Development; and at school age with the Movement Assessment Battery for Children. Cognition was determined at toddler age with the Mental Developmental Index from the Bayley Scales of Infant Development; and at school age with an intelligence test and attention and memory tests.
Results:
The mean absolute difference in standardized motor scores for all time points was 1.01 SD (95% confidence interval: 0.91-1.11). Only the explained proportions of variance of maternal socioeconomic status and verbal intelligence were significant for sustained attention and verbal memory (r(2) = 0.104, P = .030 and r(2) = 0.074, P = .027), respectively. The children's scores on early motor tests added little value for their motor and cognitive development at school age.
Conclusions:
In healthy children the stability of motor development from birth until school age is low. Maternal socioeconomic status and verbal intelligence rather than the infants' scores on early motor tests signified added value for complex cognitive functions at school age.
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