lecture one 2010
TRANSCRIPT
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Chapter 1:
Introduction
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The
Life-Span
Perspective
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What Is Life-Span Development?
A pattern of change involvinggrowth and decline, beginning at
conception and lasting until death.
Life phases: infancy, childhood,
adolescence, young adulthood,
middle adulthood, and lateadulthood.
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The Historical Perspectives:
Childhood has been of interest for along time. (mid 1800¶s)
Adulthood became of interest in the
late 1900s. Three philosophical views of child
development:
Original sin Tabula rasa
Innate goodness
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Childhood is seen as a special time of
growth and change, influenced by ± child-rearing practices,
± childhood experiences, and
± environmental influences.
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Humans are living longer
Check out the life-span of other species on
page 8 (figure 1.1)
What is the average life span for humansand how has it grown in the past 100 yrs?
± Figure 1.2
± What is the average life span for American
Indians?
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Average Human L e Expectancy ( n Years at
Birth, from Prehistoric to Contemporary
Times ± page 8
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Characteristics of the life-span
perspective:
1. Development is lifelong
± No age period dominates
development. Biological, cognitive,
and socioeconomic dimensions of
experiences and psychologicalorientation are very important to
study.
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2. Development is multidimensional:
age, body, mind, emotions, and
relationships are affecting and
changing each other.
3. Development is multidirectional:
some aspects of dimensions shrink and
some expand.
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Multidimensional aspect
± social/emotional, biological, cognitive =
and within cognitive we include: attention,
memory, abstract thought, processing info, social
intelligence
Social / Emotional
Biological
Cognitive
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3. Development is multidirectional:
some aspects of dimensions shrink and
some expand.
Examples: language, wisdom, reflexes,processing time
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4. Development is plastic: it has the capacity
for change.
For example: a small child has a head
injury and other parts of the brain take
over
OR, bully in grade school
OR, elderly may be forgetful
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5. Development science is multidisciplinary:
it is of interest to:
Psychologists.
Sociologists.
Nurses
PT/OT/Speech
Anthropologists.
Neuroscientists.
Medical researchers.
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6. Development is contextual: the context
or SETTING in which something occurs So a person acts on and responds to
contexts such as:
a. Sociocultural and environmentalexperiences.
± Where did your early childhood take place?
Home, family, neighborhood, daycare,school, peers, church etc.
City? Rural? Poverty? Wealthy? Culture?
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b. Historical circumstances. Is there
generational injury?
c. Life events or unusual
circumstances impacting on thespecific individual.
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Context - also splits into 3 types of
influence1. normative age grade ± similar for certain
ages
2. normative history grade ± common to aparticular generation ± like Baby Boomers,
Generation X or Generation Y
3. Non ± normative or Individual Events or
Unusual Circumstances that have/had a
major impact on your life
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7. Development involves growth,
maintenance, and regulation of loss.
8. Development is a co-construction of
biology, culture, and individual factors allworking together.
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Some Contemporary Concerns
Sociocultural contexts and diversity
Culture ± what are your beliefs &
values? Are they shared?
Ethnicity ± how is it valued? Or not?
Socioeconomic status ± poverty vs.
lower, middle, and upper classes Gender ± do you feel ³equal´?
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All of these affect lifespan development
Health and well-being, parenting and
education are all affected by the
sociocultural contexts in which people liveand grow.
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Social Policy Issues
Social policy: national government¶s course
of action and politics affect the welfare of
citizens
Social policy has needs related to children:
poverty, family issues,
the aging population.
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©2008 The McGraw-Hill Companies, Inc. All rights reserved.Figure 1.5
Children Exposedto Six Stressors
14
3
7
73
12
16
21
24
32
45
49
Percentage
Middle-incomechildren
Poorchildren
Exposure to violence
Crowding
Family turmoil
Child separation
Excessive noise
Poor housing quality
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The Aging of America
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Developmental
Processes and Periods
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The key developmental processes, all of
which are intertwined:
Biological ± genes, brain development,
height and weight gains, changes in motor
skills, hormonal changes, cardiovasculardecline.
Cognitive ± changes in thought,
intelligence, and language.
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Socioemotional ± changes in relationships,emotions, and personality.
In many instances, biological, cognitive,
and socioemotional processes are
bidirectional because each can affect the
other.
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©2008 The McGraw-Hill Companies, Inc. All rights reserved.Figure 1.6
Biologicalprocesses
Socioemotionalprocesses
Cognitiveprocesses
Developmental Changes Are a Result of Biological,Cognitive, and Socioemotional Processes
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Periods of development focus on time frames:
± Prenatal period.
± Infancy.
± Early childhood.
± Middle and late childhood.
± Adolescence.
± Early adulthood.
± Middle adulthood.
± Late adulthood.
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How Important is age?
Age and Happiness No specific age group reports more
happiness or satisfaction than another,
because each age period has its ownstresses, advantages, and disadvantages; for
example:
Adolescents must cope with identity
development, feelings of competency, and
self-perceptions
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And ««««.
Older adults must cope with reduced
income, less energy, decreasing physical
skills, concerns about death, more leisure
time, and accumulation of life experiences.
What are YOUR concerns at this time?
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100
0
20
40
80
60
Happypeople
(%)
Age range (years)
Age and Happiness
65 +15-24 25-34 35-44 45-54 55-64
Figure 1.9
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Conceptions of age
Perhaps we are becoming anage-irrelevant society
How should age be conceptualized?
Chronological age Biological age
Psychological age
Social age
How old would you be if you didn¶t know
how old you were? (Ask Dr. OZ)
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©2008 The McGraw-Hill Companies, Inc. All rights reserved.Figure 1.10
Age in terms of physical health
Biological age
Social roles and expectationsrelative to chronological age
Social age
Number of years since birth
Chronological age
Adaptive capacity compared withothers of the same chronological age
Psychological age
Conceptionsof age
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DevelopmentalIssues
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Nature vs. Nurture
A debate about whether development is
influenced most by biological heredity or
environmental experiences.
Nature proponents argue that genetic
blueprints produce commonalities in growth
and development.
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Nature proponents acknowledge the
influence of extreme environments ondevelopment.
Psychologists emphasize the importance of
nurture and that the range of environmentscan be vast.
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What constitutes Stability and
Change?
The assumption that nothing much changes
in adulthood
The concept of plasticity, ongoing change
Major changes were believed to occur only
in the first 5 years of childhood (early
experience doctrine);
We are no longer able to ignore the rest of
the life span.
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Continuity and Discontinuity:
The continuity±discontinuity issuefocuses on whether development is«
A gradual, cumulative quantitative
change process or A set of distinct stages that are
qualitatively different from each other
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Discontinuity
Continuity andDiscontinuity in
Development
Continuity
Figure 1.11
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These are the issues
And the concepts we will look at in this text
What questions are popping up in your
mind??