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  2. Ageing - Wikipedia

    en.wikipedia.org/wiki/Ageing

    After age 30, the mass of the human body is decreased until 70 years and then shows damping oscillations. [24] People over 35 years of age are at increasing risk for losing strength in the ciliary muscle of the eyes, which leads to difficulty focusing on close objects, or presbyopia. [27] [28] Most people experience presbyopia by age 45–50. [29]

  3. Maturity (psychological) - Wikipedia

    en.wikipedia.org/wiki/Maturity_(psychological)

    The definition and determination of maturity has been applied to the issue of criminal responsibility of juvenile offenders and to a number of legal ages. The age of majority, the most broadly applied legal threshold of adulthood, is typically characterized by recognition of control over oneself and one's actions and decisions. The most common ...

  4. Adult development - Wikipedia

    en.wikipedia.org/wiki/Adult_development

    Adult development encompasses the changes that occur in biological and psychological domains of human life from the end of adolescence until the end of one's life. Changes occur at the cellular level and are partially explained by biological theories of adult development and aging. [1]

  5. Developmental psychology - Wikipedia

    en.wikipedia.org/wiki/Developmental_psychology

    Stage 3: Play age (3 to 5) in which the psychosocial crisis is Initiative vs. Guilt. (This stage is also called the "pre-school age", "exploratory age" and "toy age".) [109] Stage 4: School age (5 to 12) in which the psychosocial crisis is Industry vs. Inferiority; Infancy. As stated, the psychosocial crisis for Erikson is Trust versus Mistrust.

  6. Piaget's theory of cognitive development - Wikipedia

    en.wikipedia.org/wiki/Piaget's_theory_of...

    However, they now can think in images and symbols. Other examples of mental abilities are language and pretend play. Symbolic play is when children develop imaginary friends or role-play with friends. Children's play becomes more social and they assign roles to each other. Some examples of symbolic play include playing house, or having a tea party.

  7. Mental age - Wikipedia

    en.wikipedia.org/wiki/Mental_age

    These two tests were split into two different ones for children. The WAIS-IV is the known current publication of the test for adults. The reason for this test was to score the individual and compare it to others of the same age group rather than to score by chronological age and mental age.

  8. A guide to the ages of the ‘Stranger Things’ cast, compared ...

    www.aol.com/news/guide-ages-stranger-things-cast...

    He's 15, and Schnapp is 17 — only a two-year difference. Gaten Matarazzo: Matarazzo is 19, four years older than his "Stranger Things" character Dustin Henderson, who is 15.

  9. Robert J. Havighurst - Wikipedia

    en.wikipedia.org/wiki/Robert_J._Havighurst

    Tasks that arise from personal values: Choosing an occupation, figuring out one's philosophical outlook. Tasks that have their source in the pressures of society: Learning to read, learning to be a responsible citizen. The developmental tasks model that Havighurst developed was age dependent and all served pragmatic functions depending on their ...