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Puberty is considered delayed when the child has not begun puberty when two standard deviations or about 95% of children from similar backgrounds have. [7] [8] [9]In North American girls, puberty is considered delayed when breast development has not begun by age 13, when they have not started menstruating by age 15, [2] and when there is no increased growth rate. [8]
Although psychological maturity is specifically grounded in the autonomy of one's decision-making ability, these outcomes are deeply embedded in not only cognition, but also in lifelong processes of emotional, [7] social and moral development. [8] Various theorists have provided frameworks for recognizing the indicators of maturity.
This form of development (known as "Proportional Development") explains why motor functions typically develop relatively quickly during childhood, while logic, which is controlled by the middle and front portions of the frontal lobe, usually will not develop until late childhood or early adolescence. [98]
Girls attain reproductive maturity about four years after the first physical changes of puberty appear. [3] In contrast, boys develop more slowly but continue to grow for about six years after the first visible pubertal changes. [29] [37] Approximate outline of development periods in childhood and early adulthood development. Adolescence is ...
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
The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts ...
Development before birth, or prenatal development (from Latin natalis 'relating to birth') is the process in which a zygote, and later an embryo, and then a fetus develops during gestation. Prenatal development starts with fertilization and the formation of the zygote , the first stage in embryonic development which continues in fetal ...
Developmental stage theories / Child development stages – stages of child development. Erikson's stages of psychosocial development, as articulated by Erik Erikson, explain eight stages through which a healthily developing human should pass from infancy to late adulthood; Kohlberg's stages of moral development