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  2. Adolescence - Wikipedia

    en.wikipedia.org/wiki/Adolescence

    An adolescent's environment plays a huge role in their identity development. [100] While most adolescent studies are conducted on white, middle class children, studies show that the more privileged upbringing people have, the more successfully they develop their identity. [100] The forming of an adolescent's identity is a crucial time in their ...

  3. Emerging adulthood and early adulthood - Wikipedia

    en.wikipedia.org/wiki/Emerging_adulthood_and...

    Emerging adulthood and adolescence differ significantly with regard to puberty and hormonal development. [53] While there is considerable overlap between the onset of puberty and the developmental stage referred to as adolescence, there are considerably fewer hormonal and physical changes taking place in individuals between the ages of 18 and 25.

  4. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    Adolescence is the stage of life that typically starts around the major onset of puberty, with markers such as menarche and spermarche, typically occurring at 12–14 years of age. [3] It has been defined as ages 10 to 24 years old by the World Happiness Report WHR. [1]

  5. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    Five Tanner stages of male genitalia; The Adolescent Period In males, testicular enlargement is the first physical manifestation of puberty (and is termed gonadarche ). [ 30 ] Testes in prepubertal males change little in size from about 1 year of age to the onset of puberty, averaging about 2–3 cm in length and about 1.5–2 cm in width.

  6. Child - Wikipedia

    en.wikipedia.org/wiki/Child

    Preadolescence is a stage of human development following early childhood and preceding adolescence. Preadolescence is commonly defined as ages 9–12, ending with the major onset of puberty, with markers such as menarche, spermarche, and the peak of height velocity occurring. These changes usually occur between ages 11 and 14.

  7. Peer group - Wikipedia

    en.wikipedia.org/wiki/Peer_group

    Although peer pressure is not isolated to one age group, it is usually most common during the adolescent stage. Adolescence is a period characterized by experimentation, and adolescents typically spend a lot of time with their peers in social contexts. Teenagers compel each other to go along with certain beliefs or behaviors, and studies have ...

  8. Identity crisis - Wikipedia

    en.wikipedia.org/wiki/Identity_crisis

    An example of an identity crisis emerging from this status is an adolescent who becomes reclusive after his identity as a star athlete is destroyed by a serious injury. Identity moratorium is the status that Marcia theorizes lasts the longest in individuals, is the most volatile, and can be best described as "the active exploration of ...

  9. Social emotional development - Wikipedia

    en.wikipedia.org/wiki/Social_emotional_development

    Adolescence is a time in which peer relationships become increasingly important and frequent. In this period, adolescents reliably spend approximately twice as much time with their peers than with their parents. [28] At the same time, there is a developmental shift occurring in the quality and nature of friendships in this period. [29]