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  2. Adolescence - Wikipedia

    en.wikipedia.org/wiki/Adolescence

    The formal study of adolescent psychology began with the publication of G. Stanley Hall's Adolescence in 1904. Hall, who was the first president of the American Psychological Association, defined adolescence to be the period of life from ages 14 to 24, and viewed it primarily as a time of internal turmoil and upheaval (sturm und drang). [90]

  3. Jeffrey Arnett - Wikipedia

    en.wikipedia.org/wiki/Jeffrey_Arnett

    Jeffrey Jensen Arnett is a professor in the Department of Psychology at Clark University in Massachusetts. His main research interest is in " emerging adulthood ", a term he coined, which refers to the distinct phase between adolescence and young adulthood, occurring from the ages of 18 to 25.

  4. Adolescent egocentrism - Wikipedia

    en.wikipedia.org/wiki/Adolescent_Egocentrism

    Adolescent egocentrism is a term that child psychologist David Elkind used to describe the phenomenon of adolescents' inability to ... According to Elkind, the notion ...

  5. Erikson's stages of psychosocial development - Wikipedia

    en.wikipedia.org/wiki/Erikson's_stages_of...

    According to Erikson's theory the results from each stage, whether positive or negative, influence the results of succeeding stages. [2] Erikson published a book called Childhood and Society in 1950 that highlighted his research on the eight stages of psychosocial development. [ 3 ]

  6. Developmental psychology - Wikipedia

    en.wikipedia.org/wiki/Developmental_psychology

    According to Jean Piaget's developmental psychology, object permanence, or the awareness that objects exist even when they are no longer visible, was thought to emerge gradually between the ages of 8 and 12 months. However, experts such as Elizabeth Spelke and Renee Baillargeon have questioned this notion.

  7. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    According to Piaget, when an infant reaches about 7–9 months of age they begin to develop what he called object permanence, meaning the child now has the ability to understand that objects keep existing even when they cannot be seen. An example of this would be hiding the child's favorite toy under a blanket, and although the child cannot ...

  8. Personal fable - Wikipedia

    en.wikipedia.org/wiki/Personal_fable

    According to Alberts, Elkind, and Ginsberg the personal fable "is the corollary to the imaginary audience.Thinking of themselves as the center of attention, the adolescent comes to believe that it is because they are special and unique.” [1] It is found during the formal operational stage in Piagetian theory, along with the imaginary audience.

  9. Developmental stage theories - Wikipedia

    en.wikipedia.org/wiki/Developmental_stage_theories

    In psychology, developmental stage theories are theories that divide psychological development into distinct stages which are characterized by qualitative differences in behavior. [ 1 ] There are several different views about psychological and physical development and how they proceed throughout the life span.