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  2. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    Although there is a wide range of normal ages, females typically begin the process of puberty around age 10½; males at ages 11½—12. Puberty generally ends between 15—17 for females and 16–17 for males. [1] [2] [3] Females attain reproductive maturity about four years after the first physical changes of puberty appear. [13]

  3. Mental age - Wikipedia

    en.wikipedia.org/wiki/Mental_age

    However, mental age depends on what kind of intelligence is measured. For instance, a child's intellectual age can be average for their actual age, but the same child's emotional intelligence can be immature for their physical age. Psychologists often remark that girls are more emotionally mature than boys at around the age of puberty.

  4. Adolescence - Wikipedia

    en.wikipedia.org/wiki/Adolescence

    Another set of significant physical changes during puberty happen in bodily distribution of fat and muscle. This process is different for females and males. Before puberty, there are nearly no sex differences in fat and muscle distribution; during puberty, boys grow muscle much faster than girls, although both sexes experience rapid muscle ...

  5. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    [20] [21] Puberty which starts earlier than usual is known as precocious puberty, and puberty which starts later than usual is known as delayed puberty. Notable among the morphologic changes in size, shape, composition, and functioning of the pubertal body, is the development of secondary sex characteristics , the "filling in" of the child's ...

  6. Stress in early childhood - Wikipedia

    en.wikipedia.org/wiki/Stress_in_early_childhood

    Stress is caused by internal or external influences that disrupt an individual's normal state of well-being. [10] These influences are capable of affecting health by causing emotional distress and leading to a variety of physiological changes. [4] Internal stressors include physiological conditions such as hunger, pain, illness or fatigue.

  7. Precocious puberty - Wikipedia

    en.wikipedia.org/wiki/Precocious_puberty

    In medicine, precocious puberty is puberty occurring at an unusually early age. In most cases, the process is normal in every aspect except the unusually early age and simply represents a variation of normal development. There is early development of secondary sex characters and gametogenesis also starts earlier. Precocious puberty is of two ...

  8. Developmental psychology - Wikipedia

    en.wikipedia.org/wiki/Developmental_psychology

    Sexual expression depends in large part upon the emotional and physical health of the individual. Many older adults continue to be sexually active and satisfied with their sexual activity. [138] Mental disintegration may also occur, leading to dementia or ailments such as Alzheimer's disease.

  9. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    Asynchronous development occurs in cases when a child's cognitive, physical, and/or emotional development occur at different rates. This is common for gifted children when their cognitive development outpaces their physical and/or emotional maturity, such as when a child is academically advanced and skipping school grade levels yet still cries ...