development Flashcards
what happens in the pre natal stage ?
- 16 days after fertilisation , human embryo develops a neural tube - this is what will become its brain & spinal cord
- cells created from around 6 weeks to 20 weeks gestation
- 2 months gestation - neural tube divided into brain cells & nerve cells , forming the cerebral cortex
what is the brain development in childhood
after birth - child develops many new neural connections (1000 per second)
- around age of 3 - density of synapses in the pre frontal cortex has reached its peak
what is the brain development in adolescence
- grey matter reaches maximum density
- limbic system matures
- pre frontal cortex matures last , explaining risk taking in adolescence
- frontal lobes reach matures at around 16
what is the brain development in adulthood
- around 25, pre frontal cortex matures
- later adulthood , neurodegenerative disease may occur e,g Alzheimer’s.
what are IQ tests and what do they measure
- intelligence quotient
- measure our ability & potential to learn , think & problem solve.
criticism of IQ tests
- may be culturally biased - may require cultural knowledge (language)
what are piagets stages of cognitive development
- sensri motor , pre operational , concrete operational , formal operational
what did Piaget believe
- childrens cognitive development changes as they get older & it develops in invariant stages
what age is the sensori motor stage & what happens
0-2 years
- understand world through senses
- develop object permanence : ability to understand objects exist even when not present
what age is the pre operational stage and what happens
2-7 years
- begin to use symbols & signs as part of their thinking
- animism : treat inanimate objects as if they are alive
- egocentrism : only see the world form their point of view
what age is the concrete operational stage & what happens
7-11 years
- ability to conserve - children understand that the properties of certain objects do not change even if the objects appearance does
- reversibility : children can reverse their thinking - understand numbers can be taken back to their original form
- decentration : can deal with two bits of info at the same time
what age is the formal op stage & what happens
- 11+
- hypothetical thinking : think about abstract ideas more
- can think logically
criticisms of piagets theory
- reductionist-> takes something as complex as cognitive development & reduces it down to 4 stages -> some argue we should take a more holistic approach & look at all the factors that work together to affect a child’s development
- stages too rigid & don’t allow for individual differences -> evidence that children develop at different rates & this may have something to do with their upbringing
what was piagets aim
- to figure out whether children in the concrete op stage are more able to conserve than children in the pre op stage
what was piagets sample
- group of children from Geneva Switzerland
- either in pre op stage or concrete op stage