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Further growth and development continues after birth, and includes both physical and psychological development that is influenced by genetic, hormonal, environmental and other factors. This continues throughout life: through childhood and adolescence into adulthood. [1]
The speed of physical growth is rapid in the months after birth, then slows, so birth weight is doubled in the first four months, tripled by 1 year, but not quadrupled until 2 years. [85] Growth then proceeds at a slow rate until a period of rapid growth occurs shortly before puberty (between about 9 and 15 years of age). [86]
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
Although physical growth is a highly regular process, all children differ tremendously in the timing of their growth spurts. [69] Studies are being done to analyze how the differences in these timings affect and are related to other variables of developmental psychology such as information processing speed.
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. [1]
Loevinger's stages of ego development, 'conceptualize a theory of ego development that was based on Erikson's psychosocial model', as well as on the works of Harry Stack Sullivan, and in which 'the ego was theorized to mature and evolve through stages across the lifespan as a result of a dynamic interaction between the inner self and the outer ...
The physical development of girls during their teenage years can be broken down into three distinct stages. At the start, which generally coincides with the beginning of rapid growth, there is the development of breast buds and pubic hair.
The growth of the brain is followed by a surge in cognitive abilities. Around the age of five, children start speaking properly and master their hand-to-eye coordination. [4] It is optimal that an environment is provided that encourages physical development and allows the children to explore and try out new things.