Normal gross motor development: the influences of race, sex and socio-economic status

Dev Med Child Neurol. 1985 Oct;27(5):635-43. doi: 10.1111/j.1469-8749.1985.tb14136.x.


The ages at attainment of 12 gross motor milestones were obtained prospectively during well-baby visits in the first two years of life for 381 children. All had been born at term and were judged to be normal at one year. A longitudinal analysis, using an index summarizing each child's progress for eight selected milestones, is reported for the 284 children for whom data were complete. A high percentage of parents were able to report the age at attaining milestones with an acceptable degree of variability. The children attained milestones at earlier ages than traditionally reported. There were only minor sex differences in age at attainment, but black children attained milestones earlier than white children.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • African Continental Ancestry Group
  • Analysis of Variance
  • Child Development*
  • Continental Population Groups*
  • Cross-Sectional Studies
  • European Continental Ancestry Group
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Longitudinal Studies
  • Male
  • Motor Activity / physiology*
  • Sex Characteristics*
  • Socioeconomic Factors*