building the foundations of social capital - investing in the early years professor frank oberklaid...
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Building the foundations of social capital - investing in the
early years
Professor Frank Oberklaid
Director, Centre for Community Child Health
Royal Children’s Hospital Melbourne
Policy Network Forum - Melbourne April 12, 2007
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Neuroscience of brain development
• Brain is not mature at birth• The brain organises itself through the
interaction of genes responding to the local environment - a dance between genes and experience
• Brain is changed by experiences• Relationships program brain development• Adversity impacts on brain development
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Influencing outcomes
• Biology - at present state of knowledge we cannot do much to change biology - although we can reduce the risk to the fetus - e.g. avoid substance abuse during pregnancy
• Environment - there is much we can do to change the environment in which young children grow and develop
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Brains are built over time• Brain architecture and skills are built in a
hierarchical ‘bottom-up’ sequence• Foundations important - higher level circuits
are built on lower level circuits• Skills beget skills - the development of higher
order skills is much more difficult if the lower level circuits are not wired properly
• It is biologically and economically more efficient to get things right the first time
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Brain architecture • The brain is sculpted by early experiences -
this determines the development of neural circuits
• Plasticity of the brain decreases over time and brain circuits stabilise, so it is much harder to alter later
• There is constant pruning of circuits that are not used - concept of developmental windows or critical periods
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The importance of relationships
• Nurturing and responsive relationships build healthy brain architecture that provides a strong foundation for learning, behaviour and health
• When protective relationships are not provided, levels of stress hormones increase - this impairs cell growth, interferes with formation of healthy neural circuits, and disrupts brain architecture
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Positive stress• Moderate and transient stress responses -
results in mild increases in stress hormone levels and short lived increases in heart rate
• Precipitants include the challenges of new people and situations, dealing with frustration, adult limit setting, the pain of a fall or injection
• Important part of healthy development as it occurs in the context of stable and supportive relationships
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Tolerable stress• Stress responses that can disrupt brain
architecture, but are buffered by supportive relationships that facilitate adaptive coping
• Precipitants include death or serious illness of a loved one, parent divorce, witnessing a frightening event, major trauma or illness, a natural disaster, homelessness
• Generally time limited, so gives the brain opportunity to recover from potentially damaging effects
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Toxic stress• Strong and prolonged activation of body’s
stress response in absence of buffering protection of adult support
• Precipitants include extreme poverty, physical or emotional abuse, chronic neglect, severe maternal depression, substance abuse, family violence
• Disrupts brain architecture and leads to stress management systems that have lower threshold of activation - increases risk of stress related physical and mental illness
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Adversity • Research on the biology of stress in early
childhood helps explain some of the underlying reasons for differences in learning, behaviour and physical and mental health
• Any adversity or stress that impacts on the parents may affect their relationship with their young child and thus has the potential to have a negative impact on brain development - e.g. effects of rapid social change
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Disordered brain circuits…
• Problems in childhood• Beginning of pathways to problems later in life• Evidence that many problems in adult life have
their origins in pathways that begin in childhood
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Worrying problems in childhood
• Child abuse and neglect• School readiness - many children vulnerable• Poor literacy and school achievement• Mental health problems - ADHD, conduct
disorders, aggressive and anti-social behaviour
• Obesity
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Even more worrying problems in adult life
• Mental health problems• Family violence and aggressive/anti-social
behaviour• Crime• Poor literacy - skills shortages• Welfare dependency• Substance abuse• Obesity and its associations
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Implications for policy• Need for increased government expenditure
to address the challenges of poor outcomes in childhood and in adult life
• But in the long term such policies– Are not sustainable - there will never be
sufficient resources– Are often ineffective - treating established
problems is difficult (and expensive)• Better to get it right the first time
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The developmental trajectory and life courseO
utco
me
Age
Risk factors
Protective factors
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Risk and protective factors
Risk FactorsChild
FamilyCommunity
School
Protective FactorsChild
FamilyCommunity
School
OutcomeNegative vulnerability
Positiveresilience
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Poverty and health (0-3 years)Less likely to:• Be breast fed• Be fully immunised• Receive well child care• Have regular and
consistent access to health services
More likely to have:• Low birth weight• Developmental delay• Higher incidence of SIDS• Higher injury rate• Suboptimal growth• More frequent
hospitalisations• Behavioural disorders
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‘Double jeopardy’ for children living in poverty
• Experience most health problems and more likely to be unimmunised, but live in unhealthy environments and have fragmented access to good health care
• Highest risk of academic failure, but attend the most disadvantaged schools
• Families experience the most stress but have fewest social supports
• Parents have the greatest need of but often have greatest difficulty in accessing services
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Vocabulary Growth - First 3 YearsVocabulary
Age - Months
1200
600
012 16 20 24 28 32 36
High SES
Middle SES
Low SES
B Hart & T Risley Meaningful Differences in Everyday Experiences of Young American Children 1995
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Literacy As children move from year 3 to year 5, the disparity among those meeting literacy standards grows
0
10
20
30
40
50
60
70
80
90
100
Year 3 Year 5
Pro
po
rtio
n M
eeti
ng
Sta
nd
ard
(%
)
High
Low
Socio-economic Status:
The Widening Gap
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So what can we do?
• Need major shift in public policy, focusing not just on treatment but also on prevention and early intervention (fence on top of cliff rather than more ambulances at the bottom)
• There is evidence from successful demonstration programs that early intervention works - ie the research points to the way we can build the fences
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Intervention effects and costs of social-emotional mental health problems over time (Bricker)
Time
High
Low
Cost
Intervention effectiveness
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So we now have...• A good understanding of early influences on
children’s development and of risk factors• Research showing that patterns established
early in life have long term consequences - crime, literacy and educational achievement, mental health, medical conditions
• Research demonstrating the efficacy of early intervention programs in improving outcomes later in life
• Add to this the economic imperative…
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Cumulative Cost and Savings
0
5,000
10,000
15,000
20,000
25,000
30,000
0 5 10 15 20 25 30 35 40 45 50 55 60 65Age of Child (years)
Cumulativedollars
perchild
Cumulative savings
Cumulative cost
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Rates of Return to Human Development Investment Across all Ages
6
8
4
2
0
Return Per $
Invested
Age
R
6
Pre-School School Post School
Pre-school Programs
School
Job Training
18
Pedro Carneiro, James Heckman, Human Capital Policy, 2003
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• The best investment in economic development that government and the private sector can make is in the healthy development of children…
• Society should adopt the perspective of ‘child-development-as-economic-development.’• ‘In our view, the economic case for why we
should invest in early childhood development is closed.’
Arthur J. RolnickSenior Vice President and Director of ResearchFederal Reserve bank of Minneapolis
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Early childhood is everybody’s business
• Important role for business sector– Macro level (broad economic): skilled and
educated workforce, social capital, international competitiveness, preservation of democratic institutions and fair society
– Micro level (workplace): attraction and retention of skilled staff, productivity, work life balance
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New champions needed• The business community is in a position to
understands the importance of early childhood better than anybody - concerned less with the cost of programs and services but rather with the return on investment
• We need to forge powerful new partnerships between academics, policy makers, business community, professionals and parents
• Early childhood investment is both a moral imperative and makes sound economic sense
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If we want to build a better world for our children and your grandchildren, then we need to care about everyone else’s children and grandchildren too. They will have an impact on the sort of world our own children and grandchildren will inherit