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The incidence and quality of physical activity education in early childhood education have a strong positive effect on the cognitive, social and physical development of young children. [12] Early childhood is a stage of rapid growth, development and learning and each child makes progress at different speeds and rates. [ 13 ]
Physical development. Typically grows at a similar rate to the previous month, usually growing between 1 and 1.5 inches (2.5 and 3.8 cm) and gaining about 2 pounds (910 g). [23] Resting heart rate is usually between 80 and 160 beats per minute, and it typically stays within that range until the infant is about one year old. [18] Motor development
Infant and toddler clothing size is typically based on age. [1] These are usually preemie for a preterm birth baby, 0 to 3 months, 3 to 6 months, 6 to 9 months, 9 to 12 months, 12 months, 18 months, and 24 months, though there is no industry standard definition for those sizes. [1]
For example, if I have a patient who is 12 months old and is not yet saying simple words like ‘mama’ or ‘dada,’ I am much more concerned about them if they have missed other milestones ...
Talking is the next milestone of which parents are typically aware. A toddler's first word often occurs around 12 months, but this is only an average. [23] The child will then continue to steadily add to his or her vocabulary until around the age of 18 months when language increases rapidly. He or she may learn as many as 7–9 new words a day.
By about 8–12 months, they go through a fairly rapid change and become fearful of perceived threats. [112] By around 6–36 months, infants begin to prefer familiar people and show anxiety and distress when separated from them, and when approached by strangers. [113] Separation anxiety is a typical stage of development to an extent.
This was confirmed by researchers who first studied mothers' behavior towards 8-month-old infants and later tested the infants' vocabulary when they were 15 months old. [20] A first important development of infants is the discovery that they can influence their parents through babbling (development of intentional communication). [20]
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