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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]
Charts based on a specific race or ethnicity are not useful because of the growth chart progression can be attributed to socioeconomic factors. [14] WHO launched a revised growth in 2006 chart using children from Ghana, Oman, Norway, Brazil, India and the USA that substantiated the fact that growth is highly dependent on environmental factors. [15]
In addition, the mid parental height (MPH) is used to calculate the expected height potential and interpret the growth curve of a child. [3] The following calculations are used for males and females respectively: Male = (father’s height + mother’s height + 13 cm)/2 Female = (father’s height-13 cm + mother’s height)/2. [3]
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
“Developmental milestones are important to parents because they are a baby or child’s 'first time' doing something and an indicator that one’s child is developing normally,” says Dr ...