Developing and Aging
ACROSS THE LIFESPAN


Biology 266     —     Life Span part 1c

PRE-SCHOOL DEVELOPMENT (Conception though early childhood):
    COGNITIVE DEVELOPMENT
  • Childhood:
    • Needs freedom and space to move and exercise at will (SAFELY)
    • Friends: free (unstructured) play
    • Toilet training-- encourage; don't punish.
      Celebrate success (in other things, too); don't dwell on failures.
    • Teach the concept of "dirty" and the need to wash hands (after 'dirty', before eating, etc.)
      "Any problem that can be cleaned up with soap and water is a SMALL PROBLEM"
          --Dr. Benjamin Spock, pediatrician & author
    • Encourage choices, preferences (among foods, toys, etc.):
        teaches self-reliance (offer guidance if needed)
    • Teach that certain things BELONG here or there or "in the toy box";
        when child is old enough to trust, teach that certain things BELONG in the GARBAGE
        (without touching what's already in there)
    • Teach the concepts of AGAIN or MORE; also ENOUGH.
        Babies as young as 2-3 months can learn to respond to MORE by smiling.
    • Punishments and rewards: give age-appropriate reasons.
      Rewards and encouragement work better than punishment
      No harsh punishment-- standing in corner ("time out") teaches well
      Take toy away if used destructively
    • Conversations, language development, frequent naming of objects and places
      UP and DOWN are easy concepts to teach early (including "pick me UP")
      See the father shown on page 86: lift the child and say "up, up, UP!", then "Doowwn!"
    • Importance of READING EARLY (never too early) and often
      Many children can learn to read before age 4 or 5!
    • TV and electronic media: OK but limited; use in social context with parent;
        don't let it interfere with time outside, etc.
    • Counting and adding: develop math skills with Cheerios, Fruit Loops or raisins, later with shapes drawn on paper
    • Enrichment: new objects, new places and experiences (store, restaurant, park, zoo, museum)
    • Interrelated knowledge: reminders of seemingly unrelated things can pop up anywhere--   Be prepared, take advantage.
  • Piaget's stages and early cognition:
    • Sensorimotor phase (~0-2 yr.): Child tests "schemes" (hypotheses) "like a little scientist"
      • Assimilation (of similarity among objects & situations)
      • Accommodation (revises hypotheses if needed)
      • Example: motor skills for picking up different objects (light vs heavy, big vs small)--
          fascination with lightweight large objects (empty box, beach ball, balloon)
      • Learning by repetetive play: back & forth, in & out, open & closed (drawers, boxes, doors)
        Compare Fisher's "Busy Box"; also fun filling up box then dumping it all out
        Learning that objects make different sounds when dropped
      • Equilibration: totally new theory
      • Learns object permanence (looks for hidden objects)
      • Begins to point and use symbols (gestures, words), incl. "pick me up"
      • Learns to pretend
    • Preoperational phase (~2-4 yr.)
      • How 3-D object looks to another person (p. 122)
      • Liquid in tall vs wide vessels (p. 123-124)
          "centration" = focus on one feature only
      • Animism: attributing thought to inanimate objects
      • "Learning by doing"-- free play with objects teaches texture, weight, 3-D shape, etc.
      • Early distinction between living and inanimate objects
      • Attention: focus on a stimulus, then process further
      • Orienting response-- Strong or unexpected stimulus provokes changes in heart rate, brain waves (also sucking in infants)
      • Learning:
        • Habituation: no longer responds to a familiar or repeated stimulus if inconsequential
        • Classical conditioning: If A is followed by B, then A leads to expectation of B
        • Operant conditoning: If action is rewarded, then repeat it (and remember)
      • Sense-pleasure play (e.g., splashing with water; rolling downhill)
      • Memory: duration improves
      • "Peek-a-boo" games teach object permanence
      • Autobiographical memory of childhood: hardly any before age 3; depends on language
      • Learns counting and adding with small objects (safest: Cheerios or Fruit Loops)
  • Vygotsky:
    • Intersubjectivity =social context (guidance of teacher, but also of society at large)
      Example: child talks to herself (private speech, self-talk) as social reminder
    • "Scaffolding": minimally needed instructional hints (words or gestures)
    • "Zone of Proximal Development" = tasks that child cannot do alone, but accomplishes with adult assistance (then learns to do alone)     Example: tying shoelaces
  • Language and speech:
    • Crying; also listening (may stop crying to listen).
      Newborns recognize mother's voice, cadence (rhythm & pitch) of mother's language
    • Imitation begins ~3 months (show tongue, smile, open & close fingers ("bye-bye")
    • Babies understand many words before they can talk--   "baby", "boo-boo", some body parts ("tongue"), "pick me up", name of family pet
    • Articulate sounds (like "ma" or "ba") begin ~6 months.
    • ~9 months: repeating sounds, then babbling (usually with musical intonation)
    • Infant-directed speech ("motherese"): slower, more pauses, more emphasis
      of important words
    • Cadence and pitch of language is learned. Newborns often pay more attention
      to Mother's spoken language than to other languages.
    • Nouns (names for things) come first; verbs come later.
        Many early words are partial, like "ju" for "juice"
    • Simple gestures-- reaching, pointing, opening and closing fingers ("bye-bye", no wrist motion yet)
    • Parents can help: TALK A LOT, incl. to child; also READ (early and often)
      Also SING SONGS ("Head and shoulders, knees and toes..."), play word games ("Abdomen")
    • Videos, TV, etc.: best if used socially together with parent, but in limited amount.
    • Sentences: 2-3 words at first; more complex later
    • Telegraphic speech: early, not grammatically varied: "Two cat"; "Mama good"; "Boy bad"; "I draw picture"
    • Grammar comes slowly, through imitation and repetition
    • "Critical period" for language learning (~age 2-6): easier to learn at this time;
      native fluency if learned early (more difficult later, usu. not native fluency);
      severely impaired mental and social development if no language is learned by age 5-6 (evidence: abused and abandoned children, "wild boy of Aveyron" and similar cases)
    • Social interactions necessary for language development
    • Very strong desire to communicate ("Terrible Twos" may result if the desire greatly exceeds the ability, --> frustration)
    • Social conversations: Imitation comes first; taking turns understood early (crying baby often stops to listen to talk)
    "Terrible twos"
  • Importance of "NO!"
  • Self-assertion; concept of self ("me")
  • Prohibitions and punishments (beginning around age 2)--
    Punishments seldom have any effect before ~age 2.
    NEVER PUNISH a child for acting their age !
      (Don't punish a 3-year old for acting like a 3-year old)
    "Time out" often works best-- "Go stand in the corner!" or similar
  • Tantrums in some-- often best to ignore, or calmly say "We can talk when you calm down"
  • Theories about "terrible twos"--
      Toilet training?
      Frustration from inadequate language ability to express desires or requests



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Syllabus
rev. Aug. 2020