Developmental Psych

  1. Biosocial Development
    • 1. @ birth full term infants weighs approx 7 ibs; 20 inches in lenght
    • 2. By 4 months: should double (14 ibs)
    • 3. By 12 months: should tripple (21 ibs)
    • 4. In 2nd year: Growth starts to slow
    • 5. By 24 months: Child should weigh almost 30 ibs
    • **Newborn needs to eat every 3 hours**
  2. In just the first 2 years
    • 1. The brain weighs 75% of the adult human brain weight
    • 2. The height will be about 50% of the adult human height
    • 3. The weight will be about 25% of the adult human weight
    • **The body growing into the head**
  3. General Pattern of Physical Development
    • 1. Cephatocaudal: From conception to 5 months when the head grows more than the body **infants learn to use upper limbs before the lowe limbs**
    • 2. Proximodistal: Until puberty when this pattern reverses to distalproximo
  4. Nurture (The environment) must provide the infant
    • 1. Adequate opportunity to sleep (in particular REM sleep) **Slow wave sleep: restorative to body; growth hormones are released** **REM sleep: lighter stafe of sleep; brain waves reflect to similar brain waves when we are awake; important for our brain and necessary for our survival** ***Child sleeps more than adult and more % of sleep in REM sleep***
    • 2. Enough food **The method of breast milk/formulla for 1st year** **No cow milk for one year** **Solids can begin @ 4-6 months**
    • 3. Stimulation **Talk, sing, read to the baby** **carry them around, show them things** **play with them, react with the baby**
  5. Brain Development
    • 1. @ fertilization new life begins as a single cell
    • 2. 9 months later infant born with trillions of cells
    • 3. 100 billion of those cells are called Neurons
    • 4. A neuron is a nerve cell that handles infor processing at the cellular level
    • 5. Infants born with immature brain and all the neurons it will ever have (most in the brain)
    • 6. What happens next depends on the environment providing enough sleep, food, and stimulation
    • **Many inputs dendrites only one output axon**
  6. Brain development refers to the brain maturing through
    • 1. Formation of neural connections (Blooming & Pruning) More connections will provide the brain with plasticity and resilience
    • 2. Myelination of the axons (For speed)
  7. The environment MUST provide through
    • 1. Sleep (for growth and restoration)
    • 2. Food (for myelination)
    • 3. Stimulation (for neural connections)
    • **The infants brain is literally waiting for experiences to the environment to determine how connections will be made**
  8. Infants Reflexes: Born with
    • 1. Sucking: most important for initial survival
    • 2. Rooting: Tickling babies cheecks and they turn to it
    • 3. Breathing: taking in oxygen
    • 4. Moro: When scared reaching out to ge picked up
    • 5. Princer Grasp: shows up @ 12 months, index finger to thumb
  9. Motor Skills
    • 1. Gross: Big
    • 2. Fine: Small
  10. Infants Senses
    • 1. Vision: cant see @ birth, vision develops slowely and infants prefer human face
    • 2. Hearing: the best born with sense
    • 3. Taste: picky about what they eat
    • 4. Smell: takes time from myelination
Card Set
Developmental Psych
Chapter 5