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Lecture Notes with Powerpoint References

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John Bassili

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Chapter 12 Life Span Development January 26
The Study of Development
Focus on lifespan from infancy to old age:
Physical development (changes in the brain and abilities)
Perceptual and cognitive development (i.e. depth perception, recognizing
phonemes in language, educators focus on cognitive development)
Emotional and social development (i.e. the bond between mother and child)
Let’s Begin in the Womb
In the zygotic phase, cells develop in the nervous system
There are trillions of neural connections between neurons in a baby’s brain
The neurons form at a pace of 500 neurons a minute during the fourth week of pregnancy
Once neurons are formed, they stay there for the entire lifetime of a person
The neuronsknow where to go, genetically
In the World After Birth
As the baby is born, an assessment is made to see how healthy the baby is called the
APGAR score
APGAR stands for appearance, pulse, grimace, activity, respiration
It is taken after 1 minute and after 5 minutes
It uses a two point score system, 2 points max for each category, max score of 10 for the
5 categories combined
Motor Development in Infancy
Infants have a very limited repertoire of behaviours
Some of the survival reflexes include breathing, swallowing, and sucking
Some reflexes are adaptive or are left over from evolution: rooting, palmar, stepping,
moro (startle), Babinski, swimming
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