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fertility
referring to the # of children born to women (esp population 15-49)
fecundity
biological capacity to reproduce (physically able to have children)
men are fecund longer
fecund period - menarche - menopause
stages of fecundity
maximum fertility
16 children/women
opportunity costs (what women give up when they have children, esp that many)
employment (developed countries have a higher status of women~can delay fertility)
education
nutrition
mental health/safety of children and parents
Why do societies not come close to 16 kids?
natural fertility
rate of reproduction you would expect without any intervention or limitations
family control
limit family size after birth via infanticide (killing), fosterage, orphanage
proximate determinants of fertility
intercourse variables
conception variables
gestation variables
intercourse variables
a proximate determinants of fertility
form/dissolutions of sexual unions
age of 1st sexual union
permanent celibacy (religious reasons)
time spent outside sexual unions (married, divorced, single, remarried)
exposure to intercourse within the union
voluntary abstinence
involuntary abstinence
sexual frequency
conception variables (exposure to concepetion)
a proximate determinants of fertility
involuntary infecundity (unable to have children)
voluntary infecundity (tubes tied, vasectomy)
contraceptive use/non-use~ blends into access and information/knowledge
gestation variables
a proximate determinants of fertility
miscarriage and abortion
fertility, mortality, migration
3 population processes
utility of framework
assess contribution of any factor to change a nation’s overall fertility
ex: estimate abortion rates (before/after policy change)
fertility intentions
predict short term fertility - not helpful for long term fertility
cultural shifts/policy changes
fertility decisions made 1 child at a time
baseline (survey)
want or not want a kid
baseline (survey) fertility
want or not want a kid
want, not have
want, have
not want, not have
not want, have
parity progression ratio
fraction of people going from x kids to x+1 kids
expenses/income / cost whether physical or opportunity
dual income
lifestyle
education - postponing, stage of life course
fertility transition
shift from high fertility rate char by only minimal individual deliberate control, to low fertility entirely under a woman’s control
delay in childbearing to older ages and typically an earlier end to childbearing
to control fertility does not mean to limit it
understand why fertility has been so high in human history
define concepts related to human reproduction, review (global) measurements
Why, when, and how does fertility decline from high to low levels?
menarche
the onset of menstruation, usually occurring in early teens
menopause
the end of menstruation
emotional fulfillment
religious reasons (“be fertile and multiply”)
circumstances (unintended preg)
be above replacement level
elder care / retirement
Why do people want kids?
social factors and fertility
women status
income, wealth
education
critiques of the economic model
jointness of demand
complexity of child services
critiques of the economic model - jointness of demand
demand for kids is coupled with demand for sex; people have sex despite whether they want them
critiques of the economic model - complexity of child services
hard to identify what the value of a child is
consumption unity (psych benefits, enjoy being a parent)
labor productivity
old age security
survival
cultural norm
security/labor
son preference
why fertility is so high
mixed composition
idea based on this curvlinear relationship that people want to have a male and a female
stage 1 to go to stage 3
acceptance of calculated choice
perceive advantage of lower fertility
knowledge/mastery of effective technique control
ansley coale
identified what has to be there for substantial fertility decline, does not have to be accompanied by mortality decline
acceptance of calculated choice
religion (an obstacle): contracpetives interfere with the gods
low status of women: patriarchy, multiple marriages~don’t decide when to have sex/can’t say no
perceive advantage of lower fertility
economic stability, position in social structure-have to decide how many kids fi in
knowledge/mastery of effective technique control
to reduce level of fertility
not everyone has ability to get contraceptives (birth control, condoms) - more educated tend know how to effectively use
cultural barriers make it less acceptable
Bangladesh
do arranged marriages
women = low status, high fertility rates
Grameen Bank
microcredit program; women can join, female participation in the program is positively correlated with female empowerment —> lead to contraceptive use —> traveled to the village and spread to other women
leads to lower fertility
modernization and secularization
cultural diffusion Grameen Bank
women who live in the village eventually began using contraceptives, even though they don’t feel the same levels of empowerment
unmet need - fertility
women have desire to space, delay, or limit births but do not have the means available
depend on countries structure (religious, women status)
Thomas Theorem
if you perceive something to be real, it’s real in its consequences
social construction of reality (norms, values, structure)
if you experience certain norms in the life course, they’re not necessarily aware of outside ideas
job availability
age structure
education
language
politics/polarization
why would people move to specific countries
random
migration is not
network theory - migration
people around you can help you get adjusted (find job, house, etc.)
cumulative causation - migration
even though it doesn’t seem sensible, they will do what everyone else is doing; even if it goes against their rational process
becomes part of culture
nationalists
might not agree with migration in a country
believe migrants live in their country and take their jobs
dot counters experiment
over/under estimater, divided into groups based on nothing
likely to favor those in their in group/those “labeled” like them
migration transition
shift from rural to urban as well as a shift to high levels of international migration
happens in stage II with rapid population growth
burn societies of resources (carrying capacity)
migration
any permanent change in residence; a change resulting in a move of entire realms of activity to a certain place
internal migration
within the same country; weaker cultural impact
international migration
between different countries
immigrant
came into a country
emmigrant
moving out of a country
push-pull theory of migration
some people move because they are pushed out of their former location; others move because they have been pulled or attracted to someplace else
migration evolution
current state of migration, with the population largely urban based and people moving between and within urban places
if motivation to leave is so great
cost-benefit analysis (ex: safety from a country with war)
why would we expect migration to continue even if countries forbid it?
neoclassical economic approach (migration)
supply-demand framework
economic job is good, worker supply low, wage is high = low migration
economic job is poor, worker supply high, wage is low = high migration
costs involved in migration
money
psychological (PTSD, not easy journey)
leaving family and culture
chance of survival
new household economics of migration
minimize risk, maximize income
distribute workers
dual labor market theory - migration
structure of economy and employment dictate migration from lower developed countries to developed countries to foll the secondary jobs
primary sectors: high end job that pays a lot (need college degree)
secondary sectors: lower pay jobs, not as prestigious (what migrants come for in this theory)
additional factors of migration
transportation
communication
destination
transportation - migration
lowers cost involved in living farther away
planes today
communication - migration
don’t have to sever communication once you get to place of origin
advancement
language barrier
destination - migration
not always voluntary
employment transfers-get moved via work (20%)
moving closer to relatives (pre-determined location)
intervening obstacles in migration
distance of the expected destination
cost of getting there
poor health (ex: Hispanic paradox)
selective, not random
migration is
migration - life cycle
usually early to mid 20s
stages of life where people are most likely to migrate
graduate college, find a job, no kids, easier to move
gender - life cycle
tide migration
social/female status: some females may be left behind or forced to migrate by men
^ status women choose to migrate on their own
unmarried - migration
migrate more than married people
a single person does not have to rely on someone else
unmarried could include divorced, widowed, never married, co-habitating
levels of education - migration
educated people are more likely to migrate than less educated
make more money and have more resources
net migration rate
# of migrants - # of out migrants
total migration rate
reflection of the total effect of migration
# of in migrants + # of out migrants
migration ratio
proportion of population growth that’s attributable to migration
net # migrants/ # births - #deaths
consequences of migration
concern of discrimination and social acceptance
network theory and enclaves offsets this
fear of violence
increase and decrease of population can alter population structure
can affect job opportunities
age cohort
group of people born around the same time in history and go through history together
ex: Gen Z, boomer, millenial
post COVID age cohort
educational gap, bad/lazy habits, anxiety
why things might be changing in college admissions for example
Baby Boomers (1946-1964) - social security
established 1929-1930; gives financial assistance after the age of 65
people originally receiving did not live as long as they do today —> also not as many people paying into it
going to eventually run out
Baby Boomers (1946-1964) dependency ratio
number of people who are working ages versus those at the dependent age
working age: 15-64
dependency age: 0-14 and 65+
sandwich generation
when you take care of your children and parents
staying alive longer and staying alive longer when they’re sick
sex ratio
number of males per 100 females
cohort effect
see differences across age, but these ages went through distinct times in history
ex: you don’t get racist as you get older, it’s the 65+ cohort
age effect
change with chronological age
ex: income
life course perspective
many years to think and imagine what that life stage will look like; when you get there and it’s not what you imagined it can be hard for you to handle
65+ life stage
retirement
retirement effects
more time for leisure; especially in developed countries
lonely, especially if widowed
need a plan
family focused
mental aspect: miss working so go out and get part-time jobs
when people retire later
take “our” generations jobs
second route of parenting
in a poor economy, families rely on grandparents to watch their kid
co-residential or 20+ hours a week
unexpected, can affect marital quality
marital homogany
marry someone similar to you and has similar beliefs to you
education (driving factor today)
religion (1950s)
race
diversity and change in families
blended families (bc of divorce, remarried)
separated families
functions of marriage
sense of stability
have children and raise them
socially motivated - get invited to certain things
normative thing (see other people do it, feel they need to)
age transition
represents a shift over time in the age and sex population in which there are slightly more males than females, to an older population with more females than males
age stratification
the assignment of social roles and social status on the basis of age
ex: getting married, being sexually active, dying, criminal behavior
measuring age structure
calculate a population’s median age: age at which half of the people are above it and half are below
urban transition
represents the reorganization of human society from being predominately rural and agricultural to predominately urban and nonagricultural
urban
function of
population size
space (land area)
economic and social organization
ratio of population to space (density/concentration)
urban places
can be thought of as a spatial concentration of people whose lives are organized around nonagricultural activites
social environment
the people whom we interact and share our lives with
built environment
physical buildings and landscapes in which life takes place
social and built environment
urban environment is a combo of
fertility rates are going down:
people are having fewer kids, maybe even no kids
postponing birth of first child (status of women, career)
high divorce rates
family - women status
more likely to employ contraceptives because they have a say, working towards career/seeking higher education
postpone fertility, even marriage
cohabitation
why would you cohabit?
scared of commitment
able to have sex without legal commitment
trial marriage
save money
social pressure
globally - might not be legal to marry the same sex
why would conception while cohabitating spur marriage for white people?
history of religion, marriage is important
child out of wedlock could be seen as disgraceful
cohabitation is a step towards marriage