Flashcards in Chapter 8 Deck (134)
Define human development:
scientific study of changes as people age from conception to death
Define nature (in human development):
in hearted characteristics (genes)
Define nurture (in human development):
What does behavioral genetics focus on?
Nature vs. nurture interaction
Define longtitudial research:
same participants are studied over a long period of time to note age-related changes
What is cross-sectional research?
different age groups of participants are studied at one particular point in time to note age-related differences
What is cross-sequential research?
different age groups of participants are studied over a limited period of time to note both changes and differences
what 2 studies were done to study nature-nurture interaction?
adoption and twin studies
What did adoption studies do?
an adopted child's characteristics are compared to those of the biological and the adoptive family
What did twin studies do?
identical twins are compared in the search for genetic and environmental effects
What is the prenatal period?
development period before birth
What is another name for prenatal period?
What is conception?
when sperm penetrates ovium
the single cell formed from fertilization
when the baby is from 2 weeks to 8 weeks old and is firmly attached to the uterus
the form of the baby from 8 weeks to birth.
tremendous growth occurs during this stage
specialized organ that provides nourishment and filters away the developing baby's waste products
any substance that can cause birth defects
What are examples of teratogenes:
How long does the embryonic stage last?
it last from eek 2 to week 8
Why is organogenesis used to describe the embryonic stage?
during this time all major organs begin to form
define critical period (pertaining to the embryonic period):
time during which some environmental influences can have devastating effects on the infant
How long does the fetal stage last?
from week 8 to birth
Organs have began to do what by the fetal stage?
beginning to form
What does the fetal stage consist of?
growth and maturation
What is the quickening?
when mom can feel the fetus move
when does the quickening occur?
at about 16 weeks
What is viability?
when fetus has a 50/50 chance of survival on its own