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The Bayley Scales of Infant and Toddler Development (version 4 was released September 2019) is a standard series of measurements originally developed by psychologist Nancy Bayley used primarily to assess the development of infants and toddlers, ages 1–42 months. [1]
The height, weight, and head circumference of a child can be compared to the expected parameters of children of the same age and sex to determine whether the child is growing appropriately. Growth charts can also be used to predict the expected adult height and weight of a child because, in general, children maintain a fairly constant growth curve.
Short title: Birth to 36 months: Boys, Length-for-age and Weight-for-age percentiles: Image title: CDC Growth Charts: United States: Author: NCHS: Keywords
Early childhood development is the period of rapid physical, psychological and social growth and change that begins before birth and extends into early childhood. [1] While early childhood is not well defined, one source asserts that the early years begin in utero and last until 3 years of age.
Newmeyer suggests parents download the CDC's free milestone tracker app, which can help parents keep tabs on their child's development from ages 2 months through 5 years old.
Developmental milestones [3] [4] Age Motor Speech Vision and hearing Social 1–1.5 months When held upright, holds head erect and steady. Cooes and babbles at parents and people they know Focuses on parents. Loves looking at new faces; Starts to smile at parents; Startled by sudden noises; Recognition of familiar individuals; 1.6–2 months
In March 2010, the Gesell Institute completed a three-year nationwide study which included some 1,300 assessments of children ages 2 years 9 months to 6 years 3 months. The study included a sample of public, private, urban, and suburban schools, 55 sites spanning 23 US states participated in the study.
Short title: Birth to 36 months: Boys, Head circumberence-for-age and Weight-for-length percentiles: Image title: CDC Growth Charts: United States: Author