module 4 : developement Flashcards
dizygotic (fraternel twins)
- 2 eggs
- 2 sperms
- can be different sexes
monozygotic (idential twins)
- 1 egg
- 1 sperm
- same sex
period of zygote
- 0-2 weeks
- rapid cell division
blastocyst
hollowed zygote (attaches to uterine wall)
ectopic pregnancy
when egg installs in fallopian tube (can’t expand)
period of embryo
- 2-8 weeks
- growth of bodily structures
cephalocaudal development
development from head to tail
proximodistal development
internal organs to outwards extremities
period of the fetus
- week 9-birth
- refinement and finishing touches (positioning)
teratogens
environmental agents that can negatively affect prenatal development
teratogens important factors
- dose, timing, cumulative effects
- experiments with humans are unethical
- other mesures of exposure are necessary
alcohol
- FASD : fetal alcohol spectrum disorder
- damaged internal organs, physical traits, cognitive impairment …
thalidomide
- medicine used to reduce nausea in mothers
- leads to deformation of limbs (shirt arms or legs)
zika virus
- misquote bites or sexual contact
- microcephaly : small head
two important figures in cognitive development
- jean piaget
- vygotsky
Piagets stages of development
1) sensorimotor (0-2)
2) preoperational (2-7)
3) concrete operational (7-12)
4) formal operational (12+)
sensorimotor stage
- uses reflexes and body to discover world
- object of permanence (doesn’t existe when isn’t seen)
pre operational stage
- animism (believes that inanimate objects have feelings)
- egocentrism
And fails conservation tasks
concrete operational stage
route planning and understands conservation
- identity
- compensation
- inversion
formal operational stage
abstract thinking and hypothetical reasoning
vygotsky
socioculturel theory
- cultural context : relationships with people and environment
scaffolding and zone of prefixal development
- when parents leads them them lets them learn by themself
- distance between what a child can accomplish alone vs with assistance