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objectivity
drawing conclusions from data regardless of personal opinions, beliefs, or values
confirmation bias
a tendency to search for information that supports our preconceptions and to ignore or distort contradictory evidence
positive statement
descriptive, factual statement which describes the world as it is; can be empirically tested
normative statement
statement which describes how the world should be; cannot be checked empirically
science
a systematic, organized series of steps that ensures maximal objectivity and consistency
qualities of a good scientific statement
reproducibility
intersubjectivity
falsifiability
impersonality
reproducibility
can other researchers replicate the exact same results by following the same methodology under the same conditions?
intersubjectivity
is the statement grounded in observations that can be perceived and agreed upon by multiple independent observers?
falsifiability
is there an inherent, logical way to prove the statement wrong through empirical observation or experimentation?
impersonality
is the statement true regardless of the biases, feelings, beliefs, or identity of the person making it?
quantitative data collection
systematic process of gathering measurable, numerical data that can be analyzed using empirical methods
random sample survey
research method where a smaller group of people is randomly selected from a larger population, giving every person an equal and known chance of being selected
sample-selection bias
bias introduced by systematically excluding some members of the population according to a particular attribute
standardized questionnaires
fixed-choice surveys that only allow a fixed range of responses; are easy to compare but offer little opportunity for deeper understanding and are constrained by standardized answer options.
qualitative data collection
systematic gathering of non-numerical information—such as words, actions, and open-ended descriptions from small samples; provide detailed understanding but not representative of larger population
functionalist approach
views society as a complex system whose parts work together to promote stability, balance, and social order
"How do given features of family structure and practices contribute to the functioning of a society?
conflict theory approach
views society as a constant struggle for limited resources, power, and status
"How do given features of family structure and practices reflect power differentials and/or serve to perpetuate them?"
exchange theory approach
views human interactions as a series of cost-benefit calculations where people try to maximize rewards and minimize punishments
"How do family structures and behavior reflect the self-interested choices of individuals?"
symbolic interactionism approach
views the way people act toward things (words, gestures, objects) as based on the subjective meaning those things hold for them
"How do people make sense of each other and their situation through interaction?"
feminist perspective approach
views society as a system marked by power imbalances and competition for resources, specifically centered around gender
"How do women experience family life, and how does their experience differ from men's experience?"
private family
two or more individuals who maintain a close, intimate relationship and a durable commitment to each other
main function of the private family
providing love, intimacy, and emotional support
challenge of the private family
boundary ambiguity
boundary ambiguity
a state in which family members are uncertain about who is in or out of the family
public family
one or more adults who are jointly caring for dependents, and the dependents themselves
main function of the public family
raising the next generation, caring for the elderly, ill, and disabled
challenge of the public family
free rider problem
free rider problem
individuals enjoy the social and economic benefits of raised children without contributing to the heavy costs of raising them
externalites
costs and benefits accruing to parties not directly involved in a transaction
public goods
goods that can be enjoyed or consumed by everybody without having to pay for their production
homogramy
the tendency of individuals to marry or form long-term unions with people who share similar social, cultural, demographic, or socioeconomic characteristics
consequences of homogamy
can reinforce existing social stratification and the intergenerational persistence of wealth and advantage, as similar people tend to partner and pool resources
sex
biological features that distinguish males from females; fixed
gender
the social articulation, amplification, and creation of sex differences
gender as personal identity
formed in preschool years, then reinforced
central part of self-description
highly (but not universally) stable
gender as "role" behavior
many behaviors are gendered
e.g., fashion, household division of labor, labor force participation, "gender-appropriate" behaviors, sports, childcare
roles
socially determined expectations of how individuals should behave in a specific position
rigidity of gender roles
gender role behavior is often sharply and rigidly differentiated within societies at a given point in time
often rigidly enforced; rule-breaking is punished
flexibility of gender roles
gender role behaviors are variable across cultures, over time, and within cultures
biosocial perspective on gender
views gender identity and behavior as the result of a continuous interaction between innate biological factors and environmental or social influences
role of biology in gender
chromosomal sex, gestational sex hormones; only explains about 1/4 of the variation in certain gendered behaviors
social construction of gender
gender roles exist (in part) because people agree that they exist and then support their existence
role of socialization in gender
the lifelong process by which individuals learn and internalize cultural expectations, behaviors, and roles associated with their assigned gender
transmitted through parents, school, peer groups, and mass media
social and economic constraints of gender
gender roles encode and reinforce economic inequality and power differentials between men and women
"doing" gender
gender is an ongoing performance that people actively enact through everyday social interactions
lineage
a group of people tied by descent
patrilineal
based on or tracing descent through the male line
matrillineal
based on or tracing descent through the female line
bilineal
based on or tracing descent through both the male and female lines
locality
where a couple settles after marriage
patriolocality
when the newly married couple lives with the husband's family
matriolocality
when the newly married couple lives with the wife's family
neolocality
when the newly married couple establishes a new, independent household
Minangkabau (Indonesia)
matrilineal society
kinship and inheritance flow in the female line
women own ancestral land, men own land for cash crops, men occupy most religious and political leadership positions
Hopi (Arizona)
matrilineal society
kinship and inheritance flow in the female line
women own the land, but men work it
maternal uncles approve nephew's marital choice
role of maternal uncles in matrilineal societies
serves as the primary male authority figure, disciplinarian, and provider, often taking on roles that fathers hold in patrilineal families
extended household
kinship group comprised of a married couple, their children, and other relatives that live in the same household (e.g. parents, siblings)
monogamy
marriage to a single mate
polygamy
marriage to several people at the same time
polygyny
marriage to multiple wives at the same time; usually reserved for the wealthy
polyandry
marriage to multiple husbands at the same time
The Na (China)
matrilocal society
multiple "secret" sexual partners
idiosyncratic theory of procreation
no concept of biological fatherhood
maternal uncles act as father figures
lessons of the Na
There are endless variations of possible family structures
Social consequences of family structure depend on how the system of kinship is designed.
characteristics of the early European family
small families
monogamous relationships
bilateral kinship and inheritance
later marriage
Constantine Conversion (312 AD)
beginning of the radical changes to family law by the Church
Christian innovations
new category of kinship (godkin)
prohibited marriage to close kin (blood-related, affinal, godkin)
discouraged divorce
strictly prohibited remarriage
prohibited adoption
chastity preferred over marriage
consequences of Christian innovations (general)
limited strategies of heirship
rise of monasteries
massive diversion of familial wealth to the Church
consequences of Christian innovations (for women)
some liberation from patrilineage (increasingly officiated marriages, demphasized parental consent)
no pressure to remarry after husband's death
Protestant Reformation (1517-1648)
religious and political movement in Europe that split Western Christianity into Roman Catholicism and Protestantism
effects of the Protestant Reformation
loosened restrictions on marriage and remarriage
marriage preferred over chastity
English Reformation (1534-1603)
religious and political movement where the Church of England broke away from the authority of the Pope and the Roman Catholic Churc
effects of the English Reformation
established the independent Church of England (Anglican Church)
transferred religious and legal power from Rome to the English monarch and Parliament
shifted worship practices to use English instead of Latin
aftereffects of the Christian Revolution and Reformations
no systemic weakening of ecclesiastical courts in matters of marriage & family until 19th century
adoption remained forbidden until 19th (U.S.) and 20th centuries (Europe)

GDP per capita in the U.S.
on average, Americans are getting wealthier, but this growth is not shared equally

unemployment rate in the U.S.
highest unemployment rate during great depression; has remained relatively stable since, fluctuating with recession and inflation
reasons for rising inequality between households
growing inequalities in male earnings (decline of manufacturing sector)
changing household composition (increase in 1-person households)
movement of middle-class wives into labor force
absolute poverty
when a household's total income falls below a fixed federal poverty threshold required to meet basic life needs, such as food, clothing, and shelter
threshold is based on the cost of a minimum food diet x 3 (adjusted for inflation)
single-person household ~$16,000/year
family of four ~$33,000/year
poverty rates in 2025
overall: 10.2%
children (<18): 13.4%
working age: (18-65): 9.2%
elderly (65+): 9.8%
class
economic position in society
based on income, wealth, property ownership, and jobs
objective and measurable through numbers like bank accounts or pay
“How are economic resources distributed across families?”
status
social standing and the respect you receive from others
based on prestige, honor, culture, and community regard
subjective and based on how society values lifestyle or role
“How do family structure and behavior differ by education?”

income distribution in the U.S.
median annual household income (2025): $87,000
top 20% of households earn 52% of income
bottom 50% of households earn 12% of income
income inequality between families has grown since early 1970s

education distribution in the U.S.
of all Americans aged 25 and older:
15% had an advanced degree (master’s or doctorate)
24% had a bachelor’s degree
52% had a high school diploma
9% did not have a high school diploma
effect of education on marriage
college graduates are more likely to marry, but have a higher median age at marriage

effect of education on divorce
less educated have a higher divorce rate
divorce rate increased for all education groups until 1980
rate for college-educated women declined since 1980
rate continues to increase for less educated
effects of education on fertility
college graduates are more likely to postpone having children, but won’t have them until after marriage
less educated will postpone marriage, but have children outside of wedlock
largest increase in unmarried parenthood amongst less educated
race
grouping people by physical traits like hair texture and facial features (phenotypical presentation)
treated as a social and political category by government rather than a biological fact
ethnicity
grouping people by a shared culture, history, language, religion, or ancestral region
usually based on where a person's family or ancestors originated
“doing race”
race is an active, ongoing social process performed and negotiated through everyday interactions, rather than a fixed biological fact
e.g. using terms that amplify racial differences (Black and White)
race as a social construct
differs between time and cultures
no true biological defining features
influenced by personal identity, self-classification, social inequality, and power
one-drop rule
legal principle from 1910-1967; any person with even a single ancestor of African ancestry was classified as Black
hypodescent
social and legal practice of classifying a mixed-race person as a member of the socially inferior or lower-class racial group; ideology of the U.S.
hyperdescent
social and legal practice of classifying a mixed-race person as a member of the socially dominant or higher-status racial group; ideology of Latin America,
median age at marriage (Black vs White)
Black: 31 (W) & 32 (M)
White 28 (W) & 29 (M)
probability of marriage (Black vs White women)
Black: ~75%
White: ~90%
non-maritial births (Black vs White children)
Black: ~70%
White: ~35%
single-parent households (Black vs White)
Black: ~50%
White: ~20%
differences between Black and White familes
later marriage
lower overall marriage probability
more births out of wedlock
more single-parent households
more extended family households
extended households (Black vs White)
Black Americans are more likely to live in extended households across income groups
White Americans are less likely to live in extended households as income increases
13th Amendment (1865)
abolished slavery and involuntary servitude across the nation, except as a punishment for a convicted crime
Dred Scott v. Sanford (1857)
The U.S. Supreme Court case that ruled Black people (enslaved or free) were not U.S. citizens