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- Adolescent Dev Ch 1-5 Mayhew
Adolescent Dev Ch 1-5 Mayhew
Psychology 333 with Mayhew at Rutgers University - New Brunswick/Piscataway
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Past, Present and Future
Adolescent comes from Latin (adolescere) to grow
up
Process of actively growing up
Sense of movement and possibilities yet to be
achieved
Themes and Approaches
Ecological
systems: the interacting
structures both within adolescent, such as physical, cognitive, and
emotional functions and in the adolescent’s surroundings, such as family,
peers, school and the community
Stage
environment fit: the ways
developmental changes in adolescent interrelate with changes in the
adolescent’s social environment, such as parental rules and demands
Adolescent development today is profoundly
affected by
Cultural
diversity and Globalization
Educated
consumers: those who
understanding of the field and of the ways of knowledge is gathered allows
them to judge strengths and weaknesses of new findings
Who is an adolescent?
A particular segment of lifespan
Helps us identify and think about what happens
during these years
Edges get fuzzy, ambiguity that comes from
overlapping definitions
Two sorts of transitions
Transitional phase continues until new
equilibrium is reached
Normative: almost everyone in a particular culture goes
through
Timing can affect its impact (ex. Puberty)
Idiosyncratic: more particular to an individual
Phases and Tasks
Early
Adolescence: 11-14 years old
Adapting to dramatic body/mind changes and new
social roles they bring; accepting and learning to use one’s new
physique
Middle
Adolescence: 15-18 years old
Achieving psychological independence from
parents; developing ability to have close friendships and working toward
intimate relationships
Late
Adolescence: 19-22 or later
Preparing for marriage and family life;
considering an economic career; acquiring a mature set of values
Developmental
tasks: particular skills,
attitudes, social functions that a culture expects members to acquire at
a particular point n their lives
Adolescence across History
Inventionism: view that adolescence was promote in early 20 th
century as way of setting off young people from adult world
American teens today
Overall impression: sex, drugs and violence
Families in Flux – 1950s leave it to beaver
family hard to come by
High divorce rates, mom working, single-parent
households, blended families
Role of Peers – teens spend twice as much time
with friends than with parents/adults
Way they get along with peers has long term
effects
Consumerism – having the “right” products
Issue of Sexuality – influenced by parents,
peers, impulses, emotions, physical sensations, culture
Adolescents in a global Age
Old, Young and In-between
1 out of every 3 people is an adolescent or
child
22% of Industrialized world is under 18
Shrinking Globe
Process of Globalization – many factors
contribute to this; picking up speed
Branding the world – brand names rule (especially
American)
Glamorization of the west – distorted images
Signals to the Crowds
Consumer goods allow one to belong without
knowing anyone
Whatever is new is automatically better –
implied messages
Where is Adolescence going?
Teens staying in school longer, pushing back
marriage and work – remaining more dependent on parents
Schooling for all?
Developed countries – practically all go through
primary and secondary
Developing countries – primary education (Asia, Latin America),
in Arab and Sub-Saharan only 4 of 5 eligible are in primary school
Only half of elementary students go to
secondary school
Moving to the City
Urbanization – trend for young people to move to
cities
Face many new challenges – leaving behind
support of family/friends, dealing with a strange setting, health risks,
falling pretty to economic/sexual exploitation
Virtuous and Vicious Cycles
More efficient transportation/communication have
woven countries together
Virtuous cycle for those positioned to take
advantage of the changes in their local economy (Teens whose family can
afford for them to be in school longer)
Vicious Cycle – children of rural or urban
poverty
The Scourge of HIV/AIDS
More than 4 Million children under 15 have died
of AIDS
2001 – 580,000 children under 15 died
Young are vulnerable due to risky sexual
behavior, illicit drug use, ignorance about prevention
Many just lack the knowledge
Catastrophic effects on economic health and
future of regions
Survival and Growth
Basic Survival Skills – ongoing caring
relationship with at least one adult; social support systems; social
competence and life skills; preparation to become active members of
society; belief in promising future
Qualities that have become important with the
globalization of the economy: technical and analytical skills; motivation
for life-long learning; values to live peacefully in diverse society;
ability to live with uncertainty and change
Chapter 2: Adolescence in
Theory and Research
Theories about adolescence
Theories help explain what we already know and help
generate predictions about what we do not yet know
Biological and Evolutionary Theories
Recapitulationism and Adolescents
G. Stanley Hall – psychological development,
under the control of genetic factors, recapitulates the stages of human
history
Evolutionary Psychology
An approach that tries to understand how
current characteristics and behaviors may be influenced by evolutionary
forces
Darwinian principle of Reproductive Fitness – characteristics that make survival
more likely will become common features of population
Biological
determinism – what we do is
set by our genetic makeup
Psychoanalytic Theories
Sigmund Freud – goal is to gratify one of the
basic drives we’re born with
Psychosexual stages – oral, anal, phallic,
latency, genital
Anna Freud – Defense mechanisms
Erik Erikson – psychosocial stage, distinctive
crises, developmental task is to grapple with and answer these questions
Cognitive theories
Jean Piaget
Four cognitive stages – sensorimotor,
preoperational, concrete operations, formal operations
Formal – abstract thinking, approach problems
systematically, imagine hypothetical possibilities
Lev Vygotsky -- Acquiring ability to
use intellectual inventions and tools of one’s culture
Information processing – information enters
person’s cognitive system, processed, and stored for future use
Metacognition:
ability to be aware of one’s
own thinking processes and to develop more effective ways of using them
Learning and Social Cognitive Theories
Operant
conditioning: likelihood of
behavior being repeated is affected by its consequences
Social
Cognitive theory: an approach
that sees observing what others do and what happens to them as important
ways of learning
Social and Anthropological Theories
Concentrate on ways adolescence is similar and
different across widely varying cultures and societies
Ecological and Developmental system theories
Ecological
Theory: ways an adolescent’s
social settings interact to influence development
Developmental
systems theory: emphasizes the
ways the adolescent plays an active role in dealing with social systems
Finding out about Adolescence: The Scientific Approach
A Scientific Attitude – keep an open mind; approach with skepticism
A Scientific Method – Identify problem; outline relevant theory; generate
hypothesis; gather data; analyze data; draw conclusions; revise theory
Research Techniques
Types of Research
Populations and Samples
Representative
Sample: similar to the
intended population
Information can be generalized to population
Historical Research
Don’t know how far we can generalize from the
info we happen to have
Ethnographic Studies
Research in which the investigator spends long
periods of time in close contact with people being studied
Observation
Carefully structured to yield systematic,
objective information that isn’t biased
Team researchers must code observations in the
same way
Naturalistic observation –study in real life
settings
Experience sampling method – asks observed to
be observers
Case Studies
Intensive scrutiny of a single individual often
over an extended time
Studied individual tends to be unusual and
can’t carry over learned info
Surveys and Interviews
Survey is a questionnaire – large number of
people and quick/easy info
Interviews – open ended is a better method of
interview (follow up)
Correlational studies
Find out how closely two or more factors are
related
Experiments
Strategies for studying Development
Cross-sectional research – studying different
groups of people of different ages at the same time
Doesn’t tell you much about development but
more so about age groups
Groups also differ in cohorts
Longitudinal research – follow same group of
people across age span of interest
Looking at same people, may reveal new patterns
See how previous events affect later life
Attrition—people may die r drop out of study
Sequential Research
People from a series of cohorts are observed
over several occasions over time
Allows to estimate and separate impact of
cohort and time of measurement from changes closely linked to age.
The Ethics of Research
Informed
consent: research participants
understand what they will be expected to do and freely agree to take part
Protect well-being, dignity and privacy of
individuals who agree to take part
Underrepresented Groups
Science is to be unbiased, impartial and value free–but
scientists are only human
Gender, ethnic, cultural and class bias
In-group bias – tend to see members of our group
as individuals
Chapter 3: Puberty and
Physical Development
The age at which children enter puberty is
influenced by genetic makeup, but also responsive to factors in child’s
environment
The Biology of Puberty
An entire set of delicately synchronized
biological events
Hormones in action
Endocrine glands produce hormones into
bloodstream
The Hypothalamus and Pituitary
Hypothalamus: regulates many bodily functions
Pituitary: just below hypothalamus, controls endocrine
glands bye sending out hormones to adjust how they operate
The HPG
Axis
Hypothalamus, Pituitary Gland, Gonads make up HPG axis
Feedback loop – when hypothalamus detects hormone levels are too low, it
sends LH-RF to pituitary to make more hormones, reach gonads and
increase production of hormones into bloodstream
How Puberty Begins
Adrenarche – beginning of adrenal involvement
Between 6&9, adrenal glands mature and
produce more DHEA
By 10, sets off pubic hair growth (may also begin sexual
attraction)
Levels of androgens and estrogens get thrown
off balance
Insulin-like growth factor – substance produced
in liver may be linked to onset of puberty
Leptin – protein secreted by fat cells, may
play role in menarche timing
Physical Development
The Growth spurt
Fastest change around 12 for girls and 14 for
boys
Weight also changes dramatically – about half
of adult weight put on
Ossification – long bones change from cartilage
to bone
The awkward age
Hands and feet, along with head are first to
start growing; then arms and legs
Asynchronicity:
during early adolescence,
different parts grown at different rates
Boys gain more muscle, girls gain more fat
(boys 3:1 girls 5:4)
Boys more width in shoulders than hips
Size of heart and lungs increase more in boys
Sexual Development
Ovaries and Testes
Uterus gets longer and changes shapes
Testes grow at a quick rate – as much as 6x at
end of puberty
Boys can produce sperm early in puberty
Stages of Puberty
Tanner
Stages: system used to rate
the development of secondary sex characteristics during puberty
Girls first sign – breast bud (slight swelling
under nipples), shortly after they begin to grow sparse pubic hair
Boys first sign – growth of testes and scrotum,
followed by pubic hair and lengthening/thickening of the penis
2 years after pubic hair – facial hair starts
to grow
Armpit hair usually around end of puberty along
with sebum oil(acne)
Sweat glands in armpit and pubic (aprocrine –
pheromones)
Voices in both sexes – lower and more resonant
Timing of Puberty
Girls usually start around 10 – time between
beginning and first period is about 2yrs
Boys usually begin about a year or two after
girls (age 11/12)
Menarche and the Secular Trend
Usually used as marking point for beginning of puberty
because other changes are subtle/gradual
US – Euro/Asians =12.8 years old blacks – 12.2
years old
Puberty, Heredity, and Environment
Best predictor is age mother reached menarche
Those who are taller/heaver tend to reach
menarche earlier
Those who feel psychologically safer in
childhood home, remain children longer
Father not present or presence of stepfather
may reach menarche sooner
Menarche around the world
Latinas reach before African-Americans and
Whites
Nutrition and energy expended (labor) –
important factors
Puberty and History
Secular trend has leveled off
Meaning of secular trend may become clearer
when looking at 19 th century – people moving to city slums,
young children working long hours, poverty, stress, malnutrition
Responses
to Puberty
Puberty = physical growth and sexual maturation
during adolescence
Personal responses to puberty
Girls and puberty
Breast growth – semi-public sign of puberty
Other people notice; girl will notice if hers
are larger/smaller for her age
Key sign of female sexuality
Biggest source of negative feelings – others
reactions (Boys)
Menarche is generally decisive turning point
for girls
Most girls admit to embarrassment,
self-consciousness or physical discomfort and worry about supplies
Many cultures have stigmas that view it as
disgusting
Prepared girls have positive attitudes toward
menstruation
American – most important info source =
mothers
Schools also important source
Boys and puberty
How it affects them psychologically is harder
to find
Spermarche – first ejaculation; usually around
12-13
Spermarche not really spoken about – nocturnal
emission/masturbation
Enlargement of genitals – “locker room
syndrome” due to emphasis placed on penis size as indication of sexual
adequacy
Involuntary erections – embarrassment
Effects of pubertal timing
On average – American females begin at age (as
early as 7, late as 14)
Process usually about 2 years (as little as 1
or long as 5)
Boys – usually begin at age 11/12 (early as 9,
late as 14)
Process about 3 years (little as 2 or much as
5)
Age they enter may not predict length of
puberty
Girls who enter early suffer for it – less
popular, low self-esteem, anxious, depressed; more likely to get
involved with older boys, have problems with smoking, drinking, drugs
and sex
Enter before prepared – possible reason
Lack of support from school, family and even
friends
End up shorter/heaver – affect body views
Those in all girl schools – have no more
conduct problems than peers
Late maturing girls – tend to have more
problems with depression; more satisfied with bodies; end up
taller/slimmer;
Ethnics – no differences in
Hispanic/African-American girls that are early or late maturers (as far
as depression)
Self-esteem doesn’t decline for African Americans
as does among whites
Early- maturing boys
More popular, more leadership, maturity; fewer
problems with parents; tall/muscular faster than peers (recognized as
more mature); advantage in athletics
Problems: hostile feelings, internalized
distress; more likely to develop depression, difficulties in school,
delinquency; problems with sex, drugs and alcohol
Possible reasons – look older so hang out
with older
Late- maturing boys
More depression/internalizing symptoms than
on-time boys
Show more social initiative, intellectual
curiosity; as adults – more creative/insightful
Deviance
hypothesis: those who enter
puberty at a noticeably different time will be negatively affected
Stage
termination hypothesis: girls who enter early suffer because
they didn’t have time to accomplish normal childhood
Adult resemblance hypothesis: young
adolescents seem more adult-like will be treated more as adults
Parental Responses to Puberty
Conflict is obvious
Begin to demand more input and looser
restrictions -- upset when this
isn’t met
Developing new rules isn’t easy – easiest to
stick with old ones
Gender intensification – pushes boys to be
independent/assertive and girls to be more expressive/compliant
Girls tend to have more restrictions, boys more
autonomy
Distancing
hypothesis: more time child
spends with parents as they sexually mature, the less likely they are to
commit incest
Cultural Responses to Puberty
Many cultures have puberty rites – rituals to
mark child’s passage to adolescence
Separation – separated from home, parents,
opposite sex
Transition – intensive instruction about
beliefs, values, and ceremonial practices
Incorporation – welcomed into adult society
Puberty Rites for girls – usually at menarche
Kinaalda – Navajao
Puberty rites for boys – usually initiated in
groups
Decline of Puberty rites – heavy pressures from
urbanization, globalization, industrialization
Brain Development
The Structure of the Brain
Neuron -- Incoming signals through branched
dendrites, outgoing signals through axon (long fiber)
Synapse – gap between axon and dendrite of
another neuron
The Developing Brain
Infancy – new synapses form at furious rates
Age 2 – more than needed so synaptic pruning
(removal of unnecessary) begin
Areas of cortex activated by decision-making are
more sharply focused
Left/Right hemispheres process info more
independently
Myelination:
development of sheaths of
myelin insulation along axons of brain cells, making their operation more
sensitive and precise
Behavior and the Brain
Reductionism:
approach to scientific
explanation that reduces complex processes to more elementary components
Health Issues
Puberty and Mood
Mood swings in adolescents
Evidence that adolescents are more emotional –
moods change faster in puberty
May stem from rapid, unpredictable changes in
hormone levels
Hormones and Life events
Emotional state can bring out change in hormone
levels
Event may have greater/lesser effect depending
on current hormone level
Unpredictable events – new/changed
relationships, school difficulties, romantic relationships, new tensions
w/ parents and siblings, issues of sex/drugs
Increased vulnerability
Body Image
Girls are especially prone to criticize their
own appearance – see selves as overweight and particularly dissatisfied
with hips, thighs, waists (areas affected by puberty)
Girls have much thinner ideal girl body image
than boys do in mind
Objectification of body – something divorced
from self
Across adolescent years – boys become more
satisfied and girls more dissatisfied
Girls who were rated as attractive as 13, were
more satisfied with bodies at 18
African-American girls -- more satisfied with
body (better to be over than under weight)
Sleep Needs
Need 9 or more hours
Timing is different in puberty – stay up later,
wake up later (1am – 10am)
Delayed phase preference
Stress has impact on sleep – “turn-on” (acute
stress) or “shut-off” (continuous stress)
Not getting enough sleep, more likely to have
other problems – overweight, depression, low self-esteem, anxiety,
irritability, fearfulness, and emotional instability.
Nutrition and Exercise
Nutrition
Need for more calories and nutrients than any
other stage of life
Need for fruits, vegetables, grains; less
salt/sugar/fats; 50%calorie intake increase
Real problem for adolescents is more than what
they eat, but also what they do
Exercise
Fewer than ½ boys and ¼ girls met minimal
standards of physical activity
Drop in organized physical activity in school
Linked to better relationship with parents,
better grades, lower drug use
Chapter 4: Cognitive
Changes
Adolescences acquire a lot of new information
Deal with what if? Questions; pay attention to
more aspects of a situation; deal with multiple situations; gain better
understanding/control of own mental processes
Piaget’s
Approach
Assigned to develop test of logical reasoning –
he began to look at questions kids got wrong
Piaget saw cognitive stages as universal and
invariant
Two processes as central to the way a child
adapts to new problems/experiences
Assimilation – trying to understand the new
information in terms of existing knowledge
Accommodation – changing one’s existing concepts
in response to new experience
Stages of Cognitive Development
Sensorimotor
stage: 0-2; experience world
using sense impressions & motor actions
Preoperational
stage: 2-7; develop ability to use symbols/representation
(word or object stand for something else – ex: “horse” = large animal,
but so can a broomstick)
Confuse
the way things look with underlying qualities
Concrete Operations: 7-11; able
to think about more than one dimension of a problem; understand
conservation; able to see from another person’s point of view
The
Logic of Formal Operations
Formal
operations: 11/12; thinking on
an abstract system of formal logic
Propositional logic
Hypothetico-deductive
reasoning: person makes
logical prediction based on some supposition and then checks the
prediction against reality
Competence-performance
gap: the fact that people do
not consistently do as well at some tasks as they are capable of doing
From particular to general
Inductive
reasoning: process of going
from a collection of particular facts to a general conclusion
Logic in Everyday Life
Hypothetical alternatives – look at what is as one particular case of what might be
Understanding multiple meanings – understanding
literal and figurative meanings
Adolescent Egocentrism
Failure to make distinction between one’s own
point of view and someone else’s
2 steps to see from another view – decentration
and imagine
Imaginary
audience: is as
involved/concerned with them as they themselves are. This audience
watches their every move, cheering when things go well and pouncing on
tiniest mistakes or faults
Begins to fade around age 15/16, but may never
vanish completely
The
Personal fable: one’s
experiences are unique and they’re exempt from the usual consequences of
one’s actions
Teens tend to believe that bad things are more
likely to happen to others than them
Why act in risky behaviors?
Excitement overshadows consequences
Want to avoid feelings of regret if they miss
out on something
Increasing evidence that brain systems
controlling risky behavior matures slower
Girls show more self-consciousness associated
with imaginary audience
Boys are more likely to believe in their own
uniqueness, invulnerability, omnipotence
Beyond
Piaget
Instead of four dramatically different ways,
researchers have found gradual age trends
Younger children seem to be more competent than
piaget suggested, older much less
Not all kids reach formal operations at the same
age – depends on experiences
New Directions and Theories
Fischer – dynamic skill: capacity to act in an
organized way in a specific context
Vygotsky – saw social interactions much more
crucial to development
Zone
of proximal development: tasks
children can not accomplish alone, but can succeed with the help of a
more-skilled individual
Scaffolding:
adapting one’s guidance and
support to the current level of knowledge and understanding of the
learner
Role of mental resources
Executive
control structures: mental
representations of goals, outcomes and strategies that make it possible
to approach problems more efficiently
Information Processing
Mind seen like a computer – info is retrieved, stored, coded, decoded, discarded,
compared, combined, etc
System capacity is limited
Set of elements that work together
Attention
Selected: focus on one task or stimulus while
excluding others
Divided: ability to attend to more than one
thing at once
Working memory – keeps limited amount of info
actively in awareness and processes
Development linked to fluid intelligence –
reasoning ability
Process speed – working memory – fluid
intelligence
Physical changes are thought to speed up nerve
impulse transmission
Adolescents do better at only
rehearsing/recalling relevant information
Thinking
about Thinking
Metacognition: ability to “think about thinking” and “know
about knowing”
Monitor comprehension, decide on
approach/strategy, put them into effect
Declarative, procedural, conditional knowledge
Self-regulated
learning: exercising personal
control over steps that lead to developing skills and improving
understanding
Ideas about Knowledge
Personal
epistemology: how people
understand what knowledge is
Children believe in objectivism – truth is out
there
Rationalism – absolute truth may be difficult,
but there are meaningful ways to evaluate different points of view and
choose among them
Thinking Critically
Rationalist approach to knowledge during
adolescence is important to development of critical thinking
Chapter 5: Families
Adolescents in the Family System
Parents/families are chiefly responsible for
socialization
Family has three goals: survival,
skills/attitudes, social values
Family as dynamic systems
Positive and negative feedback loops
Positive: an increase/decrease in ones
connected factor leads to a change in the same direction in the other
connected factor
Negative: a change in one connected leads to a
change in the opposite direction in the other connected factor
Positive = change Negative = keeps system stable
Disequilibrium and phase transitions
Anytime there is a change in family member or
dyadic relationship = imbalance
Phase
transition: periods of change
when minor events may have far-reaching consequences
Changing Functions and Expectations
School becomes another important influence on a
child, as well as peers
Issues of authority and control become
troublesome in early adolescence
Extended Families
More common among ethnic minorities in the US
An additional source of emotional support
Reason for less contact for American majority –
move a lot, smaller families
Parents and Parenting
Parenting Dimensions and Styles
Acceptance/responsiveness: includes giving praise, warmth and affection
and paying attention to children’s want, needs and concerns
Criticism in subtle ways, listening to a child
Less accepting/responsive – hostile, belittling
criticism, not warm
Demandingness/control:
setting rules, stating
expectations clearly, and monitoring chill to make sure rules and
expectations are met
Authoritative
parents: demanding and
responsive; set clear standards and rules taken in account child’s
characteristics, listening to child but making authority clear; explain
reasoning for rules; give warmth and acceptance
Outcome: favorable; do well in school,
independent, self-assured, less anxious/depressed, less likely to be
delinquent or drug users
Authoritarian
parents: demanding (do as your
told); expect unquestioned obedience; strict rules and punishments;
little/no affection
Outcome: dependent and passive; less
self-assured, weak self-esteem and communication skills
Indulgent
Parents: warm/responsive; don’t
place any demands (do as you please); discipline is rare/inconsistent;
children have equal voice
Outcome: immature, irresponsible, influenced
heavily by peers and friends
Indifferent
Parents: spend little time/energy
on children; show little interest in children; little if any affection or
concern; rules are just to keep them from being bothered
Show little interest in school or work, more
likely for delinquency, drugs, sex
Behavioral vs. Psychological control
What children do and what they are like affects
parents as well
Ethnic and Cultural Differences – NOT ON THIS
EXAM
Autonomy and Control – NOT ON THIS EXAM
Attachment in Adolescents – didn’t go over in
class
Parent-Teen Conflict
“Storm and Stress” stereotype
Children are so wrapped up with parents that at
adolescence they must break away (detachment)
Research on Conflict
Changing roles and lines of authority
Tend to agree on big issues – love and respect
for one another
Those that do have high levels of conflict can
date conflict pre-adolescence
Conflict across the adolescent years
Most occurs early on
Disagree more with moms than dads – see mom
more is possible reason
# of conflicts drops over time – parallels drop
in time spent together
Stereotypes and Reality
Contrast effect – compared to school-age
children, young teens are stormy
Questions of parental authority and adolescent
autonomy enter picture
What falls into the “personal issue” domain
Lack of explanations for rules/reactions
Parents find it harder to shake off the
upsetting effect of an argument
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