Development Flashcards
(46 cards)
Nature
biologically determined maturation produces developmental change
Nurture
experience with environment produces developmental change
Sensitive Period
time window where “best” development occurs
nature sets time window, nurture provides experience
Evidence for language sensitive period
Johnson & Newport - what age do u need to learn language to speak it like a native speaker - explored relationship between age of arrival in US and grammatical rules
found negative relationship - as age of arrival increases, knowledge of grammar decreases –> best to learn language before age 7
Biology & Development relationship
biology influences development (nature) but experience (nurture) influences biology
Greenough’s Rich Rat v. Poor Rat Study
rats in two environments - rich (enriched environment) and poor (basic cage, no toys)
found physical differences in brain - rich rats had more connections with neurons –> nurture influences biology
Mozart Effect
all research done with adults, Mozart effect doesn’t replicate, normal environment provided by caring parents is “enriched”
Studying development - dependent measures
in pre-verbal infants - for mom’s voice - poop, cry, eat (sucking), eye-movements –> infants can learn to suck more vigorously to hear Mom’s voice
Studying development in vision
infants’ eyes will spend more time on novel things
Speech perception
young infants can distinguish all phonemes (not just in native language), lose this ability around 1 year
Motherese
infant-directed speech - attracts attention and exaggerates certain sounds so they’re easier to hear and distinguish
13.5 months
first words
25-36 months (2-3 years)
grammar - two word utterances (more juice), add plural (dogs), gets over-used (sheeps instead of sheep)
regular vs. irregular verbs
conventional theories of language propose that our brains contain an explicit rule about the “-ed” rule, plus a list of exceptions
past-tense learning - stage 1
age 1-3, children first learn a small number of verbs, most of which are irregular (come/came, go/went) - show no evidence of an explicit rule at this point
past-tense learning - stage 2
age 3-5, children learn many regular verbs and appear to learn to “-ed” rule - can provide past tense for a new word & also regularize irregular verbs they previously used correctly (comed instead of came/goed instead of went)
past-tense learning - stage 3
age 5-7, children finally use the correct regular and irregular forms
Piaget’s processes for change
assimilation and accommodation
assimilation
perceiving or thinking about new objects in terms of existing knowledge
accommodation
changing knowledge based on new objects/events
Piaget’s stage theory of development
- milestones for each stage, each stage is the foundation for the next
- each stage had a characteristic behavior
- not everyone agrees with Piaget but everyone tends to agree with his observations
- you must finish a stage before moving on to the next
Sensorimotor stage
first stage - <2 years, has six substages, infant’s thoughts and actions are nearly identical, milestone is the object concept, (common sense beliefs about objects)
object permanence
first part of object concept to develop
understanding objects continue to exist even when they cannot be perceived
- all infants under about 8 months fail object permanence if tested correctly
A-not-B task
baby looks for object where they saw it placed, not last place they found it
- demonstrates lack of object permanence
- fail the task under about 12 months (they perseverate)
- appears to depend on development of the frontal lobes