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Development ( Conception , Infancy and Childhood) (Development (…
Development ( Conception , Infancy and Childhood)
Human Development: the scientific study of changes that occur in people a they age from conception until death
- Physical, cognitive, psychosocial
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Infancy
Newborns
- Respiratory system begins to funtion
- Umbilical cord cut
- Digestive system adjusts
Studying Infants
Preferential looking: the longer an infant spends looking at a stimulus, the more the infant prefers that stimulus over other
Habituation: tendency for infants (and adults) to stop paying attention to a stimulus that does not change
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Brain development
- Infants brain consists of 100 billion neurons
- Brain triples in weight from birth to 3 years of age
- Synaptic Pruning: unused synaptic connections and nerve cells cleared away to make way for functioning connections and cells
Senses
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Vision is least developed
- "Fuzzy" , and black and white vision for the first few months
- Prefer patterns that resemble human faces
Cognitive Development : The development of thinking, problem solving, and memory
- Brain nearly 90% of its adult weight by age 5
Autism Spectrum disorder
neurodevelopmental disorder that involves issues in thinking, feeling, feeling, language, and social interactions
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Conception
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Implantation:
- Zygote attaches to the uterine wall
- Only happens about 50 % of the time
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Twins:
Monozygotic twins: identical twins
- One zygote splits into two separate masses of cells
- Identical DNA
Dizygotic twins: fraternal twins
- Two eggs get fertilized by two different sperm
- Different DNA
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Development ( Adolescence , Adult and Aging)
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Stages of death By Elisabeth Kubler-Ross
- Proposed 5 stages of reaction when faced with death
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Physical Development
Puberty usually lasts about 4 years
- Rate of growth and development during puberty almost as fast as that of prenatal development
Brain development
- Brain continues to develop until early 20s
- Prefrontal cortex not fully myelinated until ~25
Growth spurt around ages 10 -12
- just before adolescence
- Puberty often begins ~ 2 years after growth spurt
Psychosocial Development
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Identity vs Role confusion: values, beliefs,etc
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Parenting styles
Autnoritian: parents are rigid and overly strict , showing little warmth to their children
Permissive: parents make put few, if any, demands on their chidlren for behavior
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Cognitive Development : Abstract thinking becomes possible , although some egocentric thought remains
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Imaginary audience: young people believe that other people are just as concerned about their thoughts and characteristics as they themselves are
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Cognitive Changes
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Memory
- Difficulties in retrieval starting in middle age
- Most likely cause by stress and high volumes of information to maintain
- Usually not evidence of physical decline
Exercising mental abilities helps prevent decline
Example: work challenging crosswords puzzles, read, have active social life, stay physically active