Adolescence Flashcards
Puberty
Period of rapid physical maturation involving hormonal and bodily changes that take place in early adolescence
Girls onset of puberty age
11 and 12 years (but lots of variability)
Boys onset of puberty age
13 and 14 years
What is a secular trend?
a pattern of change that occurs over several generations
Primary sex characteristics
characteristics that are associated with the development of organs required for reproduction
Secondary sex characteristics
signs of sexual maturity that do not involve sex organs
Menarche
onset of menstruation
- timing varies across the world
- proportion of fat to muscle plays a role
- girls have lately been entering puberty earlier
Puberty in boys, main genital effects
- growth of penis and scrotum around age 12, reaches adult size 3-4 years later
- prostate gland and seminal vesicles enlarge
- spermarche- occurs around 13
Hormones
chemical substances secreted by endocrine glands and carried through bloodstream
Hypothalamus
brain structure involved in eating and sexual behaviour
Testosterone
Hormone associated in boys with genital development, increased height, deep voice
Estradiol
Hormone associated in girls with breast, uterine, and skeletal development
Body image
- adolescents are preoccupied with their bodies
- body dissatisfaction is more present during puberty
Gender differences in body image
- Girls less happy with their bodies
- Boys become more satisfied with their bodies as they move through puberty
Early maturation in Boys
-perceive themselves more positively and had more successful peer relationships than late-maturing boys
Early maturation in girls
- May increase girls’ vulnerability to problems
- smoking, drinking, eating disorders, early dating and sex
Sleep patterns in adolescence
- inadequate sleep, less than 8 hours
- when given opportunity to sleep as long as desired, avg is 9 hours 25 mins
- hormonal shifts in biological clock cause later waking (delay in melatonin)
Obesity rates
1/5 adolescents are overweight
Obesity increases the risk of
- high blood pressure
- diabetes
- future obesity
What is a big contributor to obesity?
-lack of exercise and healthy eating choices
Anorexia nervosa
relentless pursuit of thinness through starvation
- weighing less than 85% of normal weight for that age
- intense fear of gaining weight, distorted body image
What type of disorders are often present with eating disorders?
Mood and anxiety disorders
What medication can be used to treat eating disorders?
Antidepressants can be used but only when individual reaches a typical weight
How can eating disorders result in death?
Can be the restriction of food itself, or cardiovascular dysfunction
Bulimia Nervosa
- binge and purge eating pattern
- self induced vomiting
- preoccupied with food, strong fear of becoming overweight
- late adolescence, early adulthood
Binge eating disorder
- binge without the purge
- frequently overweight
- eat in secret and feel disgust after
- begins in childhood or adolescence
What type of parents are more likely to have children with eating disorders?
Perfectionist or over demanding
Why do adolescents use drugs?
- Pleasure
- Escape from pressures
- Thrill
- Peer pressure
What is a critical risk period for alcohol abuse?
Transition from high school to college
- social and coping benefits from drinking
- drinking is expected by peers
Binge drinking
Having 5 or more drinks in one sitting
1 in 4 uni students report binge drinking
What is the number one predictor of if you will do drugs?
If your friends use drugs
Tobacco
- males more than females
- 3% grade 6-9
- 13% grade 10-12
Why do we see more drug use among the younger demographic?
Executive function, ability to think about how your actions will influence your future, doesn’t mature until 25
Neural pruning and myelination
These contribute to an increase in cognitive abilities
-prefrontal cortex undergoes dramatic development
Formal operational stage
the fourth of Piaget’s stages
- learn to reason logically about abstract concepts
- abstract thinking, complex thinking, metacognition
Systematic problem solving
the process of finding a solution to a problem by testing individual factors
Hypothetico-deductive reasoning
the ability to derive conclusions from premises that are hypothetical
What experiment is used to test if people have reached formal operational stage?
Pendulum problem
- if they manipulate one variable at a time, they were at this stage
- if they manipulated everything at once, they are not
Does everyone reach formal operational thinking
Nope, only 40-60% in University would be able to solve pendulum or cup problem
Postformal thinking
Type of reasoning that takes into consideration the complexity of situations that occur in real life
-This is beyond formal operational thinking
Reflective Judgment
the ability to evaluate the accuracy of arguments as well as their coherence
Adolescent egocentrism (Piaget)
Extreme self-consciousness, belief that others are focused on appearance
David Elkind’s view of egocentrism
Two beliefs accompany formal operations:
- Imaginary audience: belief that we are alone on stage with audience judging us
- Personal fable: belief that he/she is special or unique
Depression
More than 25% of adolescents report feeling depression, 3% experience major depression
Suicide
2nd most common cause of death for 15-24 year olds (1st is car accidents)
-higher success rate for males, but more attempts by females
Suicide rate in 20th century
has increased by 600%
How many youth who commit suicide were previously seeing therapist?
50%