Answers
sensitive period
✓ ~~~ a time when a certain type of development is most likely to happen or happens most
easily, although it may still happen later with more difficulty
ex. early childhood and language learning
cohort
✓ ~~~ group born around the same time
types of developmental psychology research
✓ ~~~ longitudinal
cross-sectional
cross-sequential
longitudinal research
✓ ~~~ collecting data repeatedly on the same individuals
cross-sectional research
✓ ~~~ groups of people of one age are compared with people of another age but are
similar in other characterisitcs
cross-sequential
✓ ~~~ study several groups of people at different ages (a cross-sectional approach) and
follow them over the years (a longitudinal approach)
, reflexes
✓ ~~~ an unlearned, involuntary action or movement in response to a stimulus
occurs without conscious thought
types of reflexes
✓ ~~~ babinski
moro
rooting
stepping
palmar
babinski
✓ ~~~ fans or spreads toes in response to a stroking foot usually disappears at end of first
year
moro (startle)
✓ ~~~ back arches, legs and arms fling out and then brought back to chest in hugging
motion when position suddenly changed, loud noise or bump
lost 6-7 months
rooting
✓ ~~~ baby turns head and mouth toward stimulus that strokes the cheek, chin or corner of
mouth, facilitates finding mothers nipple for sucking
stepping