Chapter 9 Development Flashcards
Cross sectional study
Using participants of diff ages to conduct a study
- quick results but you have to be careful with how one old generation may have had diff environment when they were younger than another younger group
Developmental psych
- how our thoughts and behaviors change over time
Longitudinal study
- studying a group of people over a long period of time
- more time consuming but also more accurate
Prenatal influences on development
Mostly genetic, but there are environ Teratogens
Teratogens
Chemicals ingested or contracted by a mother that filter into the placenta, affecting fetus in profound ways
- alcohol
- psychoactive drugs
- pollutants and bacteria/viruses
Alcohol teratogen
Can cause baby to have fetal alcohol syndrome
- small deformed skulls
- delayed development
- irritability
- leading cause mental retardation
fetal alcohol effect (minor form)
- developmental problems later in life like learning or behavioral disabilities
Psychoactive drugs teratogen
- can cause newborn to share parent’s addiction
- will cause infant to suffer sever withdrawal that may kill it
Reflex skills development
All babies born with
- rooting
- sucking
- grasping
- Moro
- babinski
We lose these reflexes later in life
Rooting reflex
Touch on cheek, turn to side and try to put object in mouth
Sucking reflex
When object put in mouth, suck on it
Grasping
- if object put on hand or foot baby will try to grasp it
Moro reflex
When startled, baby will fling limbs out everywhere and then quickly retract them as much as possible
Babinski reflex
When baby foot is stroked, they spread their toes
Sensory skills development
Hear
- babies hear even before birth
- will try to turn head towards sound of moms voice after birth
- dominant sense until about a year old
Taste/smell
- love taste of sugar
- basic preferences in taste and smells that change some thru development
Sight
- born almost legally blind, anything beyond a foot is blurry
- vision becomes normal by a year old, becomes dominant sense
- visually prefer faces and face like
objects
Motor skills development
- develop same skills in same sequence
- develops as brain neurons connect with one another
- rolls about 5 months
- stands at 8-9 months
- walks about 15 months
Environ plays slight role
Attachment theory
- some infant animals become attached to individuals or objects they see during a critical period
- type of attachment babies have to mother affects development
Konrad Lorenz
Established that some infant animals become attached to certain individuals or objects seen during the crucial period after birth
Harry Harlow
Through experiments with monkeys, found that deprivation of attachment with a real mother has long term affects on behavior- monkeys became stressed and frightened more easily
Mary Ainsworth
- identified 3 basic types of attachments infants form with their parents
- secure
- avoidant
- anxious/ambivalent
Secure attachment
Infants confidently explore when parents are there, distressed when they leave, come to parents when they return
Avoidant attachments
- infants resist being held when parents are there, don’t go to parents when try come back