chapter 10 Flashcards
lifespan development
changes that humans have through infancy to old age
developmental psychology
the study of physical changes commonly associated with the different stages of our life
what is the cross sectional design and longitudinal design
cross-sectional: used to measure and compare samples of people at different ages at a given point
longitudinal: follows the development of the same set of people over a period of time.
attrition
the lose of participants in a study for what ever reason
developmental stages
lifespan changes proceed through patterns of stability followed by periods of more rapid transition
sensitive periods
a window of time during which exposure to a specific type (language) of environmental stimulation is needed for normal development for a specific ability
the germinal stage (2 weeks)
once the sperm has entered the ovum, the egg is sealed from invasion from other sperms, creating a zygote
what forms the embryo
the inner cluster of cells
what forms the placenta
the outer ring of cells
the embryonic stage (2-8 weeks)
the embryo beings to develop major physical structures such as the heart and nervous system
the fetal stage (8 weeks to birth)
skeletal organ and nervous systems become more developed and specialized muscles develop.
maternal malnourishment
increases the risk of giving birth to lower weight newborns that are more prone to illness and deficits in the mental functioning
teratogens
substances such as drugs or environmental toxins that impair the process of development. ex: alcohol and tabacco
thalidomide
caused severe birth defects, including blindness, deafness limb deformities called phocomlia
fetal alcohol syndrome
a mothers regular consumption of alcohol during pregnancy can lead to FAS which the infant is born with many implications
smoking and pregnancy
lowers the amount of much needed oxygen needed for the fetus to consume. it also adds foreign chemicals like nicotine carbon monoxide. this can lead to miscarriage, infant mortality
premature infants
born earlier than 36 weeks have underdeveloped brain and lungs. born 30 weeks have a good chance of survival, born 25 weeks or less can survive just with defects.
sudden infant death syndrome (SIDS)
a syndrome in which infants die because they stop breathing. infants and particularly preterm ones have very vulnerable respiratory systems. exposure to 2nd hand smoking triple the risk that the baby will die of SIDS
visual systems of infants
not as well developed as auditory, can only see 1/40th compared to adults, around 30cm in front of them.
colour discrimination at 2 months
depth perception at 2 months
synaptogenesis
creation of neural connections
synaptic pruning
deleting unnecessary or weak neural connections
Jean Piaget
psychologist childhood cognitive development
assimilation
acquiring new knowledge by relating it to what they already know
accommodation
learning by adjusting old knowledge in the face of new information
what are Piaget’s cognitive stages of development
- he sensorimotor stage - birth to age 2
- all the childs awareness its tied to their sensory experience and they are not yet capable of any thoughts that are separate from what they can directly see