chapter 12 Flashcards
comparing people of different ages at the same time
cross - sectional research
cohort
group of people who grow up at simliar times, in similar places, and in similar conditions
research method that investiagtes behavior as participants get older
longitudinal research
difference between longitudinal and cross sectional studies
longitudinal - assess change in behavior over time
cross sectional - differences among groups of people
rod shaped structures that contain all basic hereditary info
chromosomes
zygote
new cell formed by union of an egg and sperm
embryo
developed zygote that has a heart, brain, other organs
fetus
- developing individual from 8 weeks after conception until birth
sensitive periods
time when organisms are particularly suceptibel to certain kinds of stimuli
PKU
- child born with this cannot produce enzyme that is required for normal development. cause profound intellectual disability
- treatable if caught early
sickle cell anmeia
- pain, yellowish eyes, stunted growth, vision problems
down syndrome
zygote receives an extra chromosome at moment of conception
enviornmental agents such as a drug, chemical, virus taht produce a birth defect
ex: mother’s nutrition, mother’s illness, mother alc or nicotine use
teratogens
rooting refelx
newborns turn heads toward things that touch cheeks
the decrease in the response to a stim that occurs after repeated presentations of same stim
habituation
securely attached children
- mother as home base. explore independtely but return to mom occasionally. mom leaves = distress
- tend to be more socially and emotionally competent
avoidant children
- dont cry when mom leaves, avoid mom when she returns. indifferent to her
ambivalent children
anxeity b4 seperated, upset right when mom leaves. show ambivalent reactions when mom return close contact, but still kick / hit her
disorganized - disoriented children
children show inconsistent and contradictory behavior