1. Stages of Adolescence
By Katelyn Dibrell

2. Definition
"Adolescence is the period of life from about 13 to early 20s, during which a person is no longer physically a child but not yet an independent, self-supporting adult"

3. Stages Overview
Early Adolescence: puberty begins, desire for independence, abstract thinking, greatly influenced by their peers (11-13)
Middle Adolescence: end of puberty, greater self-involvement, goal-setting, new friends (14-18)
Late Adolescence: end of physical development, thinking about the future, stronger sense of identity, serious relationships (19-21)

4. Examining Different Types of Development
Physical: Puberty begins and end, allowing the body to grow and reach sexual maturity

5. Examining Different Types of Development
Cognitive: Initially focused on the present and not consequences, but over time begin to plan for the future and set achievable goals
+ Attempt to gain independence by distancing selves from parents 
+ Struggle with identity but find stability with age

6. Examining Different Types of Development
Psychosocial: Strongly influenced by peer group early on but begin to branch out to new groups as identity consolidates
+ Romantic relationships in early years are short-lived but in later years longer-term relationships develop

7. Adolescent Development & Piaget's Formal Operational Stage
Begins at 11 or 12 but continues into adulthood
Abstract concepts, deductive reasoning, problem-solving
Instead of relying on previous experiences, individuals consider potential outcomes within hypothetical scenarios 

8. Early Adolescence (11-13)
Physical: Onset of puberty--body hair, weight gain, height increase, and sexual interest
+ Girls: breasts and menstruation
+ Boys: genitals, voice deepens
+ Overall, girls' development is faster than boys’

9. Early Adolescence (11-13)
Cognitive: Abstract thought, interest in careers, but more focused on the present and near future
Psychosocial: Awkward about developing bodies, influenced by peer group, struggle with identity
+ Rule and limit testing and a strong desire for independence (may argue more with parents and spend more time with friends)
+ Inability to evaluate long-term consequences explains the rashness of adolescent behavior
+ Many researchers believe that certain aspects of "rebellion" may be necessary for breaking away from childhood dependence on parents and becoming a self-sufficient adult

10. Middle Adolescence (14-18)
Physical: Puberty ends and physical growth continues at a slower rate for girls but is still steady for boys
Cognitive: Goal-setting, moral reasoning, existentialism 

11. Middle Adolescence (14-18)
Psychosocial: Self-involvement that oscillates between unrealistic high expectations and anxiety about failure
+ Lowered opinions of parents
+ Selection of role models
+ New friends and focus on popularity
+ Love and passion, with frequently changing relationships and concerns about sexual attractiveness

12. Late Adolescence (19-21)
Physical: Most girls are fully developed but boys often continue to grow
Cognitive: future-oriented thinking, sense of identity, emotional stability, self-reliance, delay of gratification, moral reasoning
Psychosocial: clearer sexual identity, serious relationships, cultural traditions might gain importance