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Intelligence in preterm children at four years of age as a predictor of school function: a longitudinal controlled

Bo Mølholm Hansen1, Juliane Dinesen, Barbara Hoff

  • 1Department of Neonatology, Rigshospitalet, Copenhagen, Denmark. moelholm@dadlnet.dk

Developmental Medicine and Child Neurology
|September 11, 2002
PubMed

Insights

Very-low birthweight (VLBW) did not impact school performance in adolescents when accounting for early intelligence scores. Early cognitive ability, not birth weight, was the key predictor of later academic success.

Area of Science:

  • Developmental Psychology
  • Pediatrics
  • Educational Psychology

Background:

  • Birth weight is a known factor influencing child development.
  • Previous research suggests potential links between low birth weight and cognitive deficits.
  • The impact of very-low birth weight (VLBW) on long-term school performance requires further clarification, especially concerning its independent contribution beyond cognitive factors.

Purpose of the Study:

  • To investigate if very-low birthweight (VLBW) negatively affects school performance independently of intelligence scores at age 4.
  • To determine the predictive value of birth weight group and early cognitive index on later school performance.

Main Methods:

  • Longitudinal study tracking participants from age 4 to 18-20 years.
  • Participants categorized into very-low birthweight (VLBW), low birthweight (LBW), and normal birthweight (NBW) groups.
  • Intelligence assessed using the McCarthy General Cognitive Index (GCI) at age 4; school performance evaluated via telephone interview at 18-20 years.

Main Results:

  • Linear regression analysis indicated that birth weight group did not significantly influence school performance.
  • The McCarthy GCI at age 4 explained a significant portion of the variance in school performance.
  • Early cognitive ability was a stronger predictor of school performance than birth weight category.

Conclusions:

  • Birth weight does not appear to be an independent predictor of school performance in late adolescence.
  • Cognitive abilities assessed in early childhood are more influential on long-term academic outcomes than birth weight alone.
  • The findings suggest that interventions focusing on early cognitive development may be more effective in supporting school performance than those solely targeting birth weight.

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