Does rapid rebound height growth come at a neurocognitive cost for previously institutionalized youth?

Brie M Reid1,2, Danruo Zhong3, Bonny Donzella3

  • 1Department of Psychiatry and Human Behavior, Warren Alpert Medical School, Brown University, Providence, RI, USA.

Insights

Rapid height catch-up growth in previously institutionalized children is linked to increased attention deficit hyperactivity disorder (ADHD) symptoms. This catch-up growth may negatively impact attention regulation and behavior.

Area of Science:

  • Child Development
  • Neuroscience
  • Public Health

Background:

  • Height growth faltering is linked to poorer behavioral and educational outcomes.
  • Catch-up growth post-delay can have mixed effects, potentially impacting neurocognitive functioning like attention and hyperactivity.
  • Previously institutionalized (PI) children offer a unique cohort to study catch-up growth and attention deficit hyperactivity disorder (ADHD) symptoms due to post-adoption growth patterns.

Purpose of the Study:

  • To investigate the relationship between catch-up height-for-age growth and attention problems in previously institutionalized youth.
  • To analyze individual growth trajectories from adoption through kindergarten.

Main Methods:

  • Latent growth curve modeling was employed to examine height-for-age growth patterns.
  • Participants (PI youth) were assessed from 18-36 months of age, with anthropometrics measured four times.
  • Behavioral outcomes, including ADHD symptoms, were assessed via parent and teacher reports at age 5 and kindergarten.

Main Results:

  • The rate of height z-score change (slope), not the initial height (intercept), was positively associated with ADHD symptoms.
  • A one standard deviation increase in height z-score slope correlated with a 0.252 standard deviation increase in ADHD symptoms.
  • Growth rate was also associated with internalizing symptoms, but not externalizing symptoms.

Conclusions:

  • Previously institutionalized children show varied height growth trajectories post-adoption.
  • Accelerated catch-up growth in height-for-age was associated with higher ADHD symptom levels.
  • Catch-up growth may come at the expense of attention regulation and increased hyperactivity.
Abstract

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