Related Experiment Video

Updated: Aug 11, 2026

Concurrent Collection of Fetal Murine Brain and Serum to Assess Effects of Maternal Diet on Nutrition and Neurodevelopment in Neurofibromatosis Type 1
05:44

Concurrent Collection of Fetal Murine Brain and Serum to Assess Effects of Maternal Diet on Nutrition and Neurodevelopment in Neurofibromatosis Type 1

Published on: May 17, 2024

Birthweight and cognitive development during childhood

Shilu Tong1, Peter Baghurst, Anthony McMichael

  • 1School of Public Health, Queensland University of Technology, Kelvin Grove, Australia. s.tong@qut.edu.au

Journal of Paediatrics and Child Health
|March 3, 2006
PubMed

Insights

Lower birthweight is linked to poorer cognitive function in early childhood. This association weakens with age, with socioenvironmental factors becoming more influential in later development.

Area of Science:

  • Developmental psychology
  • Pediatric health
  • Cognitive science

Background:

  • Low birthweight is a known risk factor for impaired cognitive development.
  • Evidence suggests this association may extend across the full spectrum of birthweights.
  • The Port Pirie birth cohort provides a valuable dataset for studying early life influences on development.

Purpose of the Study:

  • To investigate the relationship between birthweight and cognitive development in a prospective birth cohort.
  • To determine if the association between birthweight and cognitive function persists throughout childhood.
  • To explore the influence of other factors on cognitive development over time.

Main Methods:

  • Prospective birth cohort study of 723 singleton live births.
  • Longitudinal cognitive assessments using standardized scales (Bayley, McCarthy, WISC) at ages 2, 4, 7, and 11-13 years.
  • Multiple linear regression analysis adjusted for potential confounders to assess birthweight-cognition association.

Main Results:

  • A statistically significant association was found between birthweight and cognitive performance at age 2 years (0.97 points lower IQ per 100g less birthweight).
  • The strength of this association diminished with increasing age.
  • The link between birthweight and cognitive function became statistically non-significant in later childhood.

Conclusions:

  • The impact of birthweight on cognitive development is most pronounced in early childhood and attenuates over time.
  • Socioenvironmental factors play an increasingly significant role in shaping cognitive development as children age.
  • Early life factors like birthweight have a diminishing, but not necessarily absent, influence on later cognitive outcomes.
Abstract

More Related Videos

Quantified Assessment of Infant's Gross Motor Abilities Using a Multisensor Wearable09:24

Quantified Assessment of Infant's Gross Motor Abilities Using a Multisensor Wearable

Published on: May 17, 2024

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale19:15

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale

Published on: August 25, 2014

Related Concept Videos

Information Processing Approach01:30

Information Processing Approach

The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is also...
Environmental Influences on Intelligence01:29

Environmental Influences on Intelligence

Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children from...
Biological Influences on Intelligence01:30

Biological Influences on Intelligence

Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter more...
Piaget's Stage 1 of Cognitive Development01:14

Piaget's Stage 1 of Cognitive Development

The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
Exploration...
The Nativist Approach01:21

The Nativist Approach

The nativist approach to infant cognitive development proposes that infants are born with inherent knowledge structures that allow them to interpret the world almost immediately. This perspective contrasts with earlier developmental theories, such as those proposed by Jean Piaget, which emphasized a more gradual acquisition of cognitive abilities through interaction with the environment. One key concept in this approach is object permanence — the understanding that objects continue to exist...
Cognitive Development During Adulthood01:30

Cognitive Development During Adulthood

Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...