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  2. Preadolescence - Wikipedia

    en.wikipedia.org/wiki/Preadolescence

    Preadolescence is a stage of human development following middle childhood and preceding adolescence. [1] It commonly ends with the beginning of puberty. [2] Preadolescence is commonly defined as ages 9–12 [3] ending with the major onset of puberty. It may also be defined as simply the 2-year period before the major onset of puberty. [4]

  3. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the uterus, where the embryo ...

  4. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    t. e. Child development stages are the theoretical milestones of child development, some of which are asserted in nativist theories. This article discusses the most widely accepted developmental stages in children. There exists a wide variation in terms of what is considered "normal", caused by variations in genetic, cognitive, physical, family ...

  5. Tanner scale - Wikipedia

    en.wikipedia.org/wiki/Tanner_scale

    Purpose. Defines physical measurements of 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 ...

  6. Childhood nudity - Wikipedia

    en.wikipedia.org/wiki/Childhood_nudity

    In a 2018 survey of predominantly white middle-class college students in the United States, only 9.98% of women and 7.04% of men reported seeing real people (either adults or other children) as their first childhood experience of nudity. Many were accidental (walking in on someone) and were more likely to be remembered as negative by women.

  7. Adolescence - Wikipedia

    en.wikipedia.org/wiki/Adolescence

    Upper body of a teenage boy. The structure has changed to resemble an adult form. Puberty is a period of several years in which rapid physical growth and psychological changes occur, culminating in sexual maturity. The average age of onset of puberty is 10–11 for girls and 11–12 for boys.

  8. Depictions of nudity - Wikipedia

    en.wikipedia.org/wiki/Depictions_of_nudity

    Depictions of nudity include all of the representations or portrayals of the unclothed human body in visual media. In a picture-making civilization, pictorial conventions continually reaffirm what is natural in human appearance, which is part of socialization. [1] In Western societies, the contexts for depictions of nudity include information ...

  9. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    Child development. A child using fingers to make a small, circular hole in the sand, 1997. Child development involves the biological, psychological and emotional changes that occur in human beings between birth and the conclusion of adolescence. It is—particularly from birth to five years— a foundation for a prosperous and sustainable society.