three stages of prenatal development
zygote (1), embryo (2), fetus (3)
zygote stage
embryo stage
fetus stage
monozygotic twins
identical, same egg divides in half, identical genetic information, must be same gender
dizygotic twins
fraternal, two eggs fertilized, different genetic information, can be different genders
three things to think about with teratogens
teratogens are worst in what stage of development
embryo stage (due to developing organs)
teratogen effects: alcohol
- impacts internal organs, physical characteristics and causes cognitive impairments
teratogen effects: thalidomide
- given for morning sickness
teratogen effects: zika virus
- stillbirth
conflicting information produces ______
change
assimilation
adding new information to an existing cognitive structure
accommodation
creating a new cognitive structure for information that doesn’t fit in any others
equilibration
the world and the reality in our mind is the same
disequilibration
the world is not the same as our cognitive structures
piaget’s four stages of cognitive development
sensorimotor, preoperational, concrete operational, formal operational
piaget’s stages: sensorimotor
- learns about world through motor abilities
piaget’s stages: preoperational
piaget’s stages: concrete operational
piaget’s stages: formal operational
- can reason hypothetical situations and abstract problems
primary circular reactions
repeated actions on own body (thumb sucking)
secondary circular reactions
repeated actions outside of body (dropping bowl on ground)
object permanence
objects exist even when not seen; usually happens around 9 months old