Homophily

homophilichomophilousThe Similarity Principle
Homophily from Ancient Greek ὁμοῦ (homou, "together") and Greek φιλία (philia, "friendship") is the tendency of individuals to associate and bond with similar others, as in the proverb "birds of a feather flock together".wikipedia
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Heterophily

heterophilousheterophily theory
The opposite of homophily is heterophily or intermingling.
Heterophily, or love of the different, is the tendency of individuals to collect in diverse groups; it is the opposite of homophily.

Social network

networknetworkingnetworks
The presence of homophily has been discovered in a vast array of network studies.
This framework has the capacity to represent social-structural effects commonly observed in many human social networks, including general degree-based structural effects commonly observed in many human social networks as well as reciprocity and transitivity, and at the node-level, homophily and attribute-based activity and popularity effects, as derived from explicit hypotheses about dependencies among network ties.

Homogamy (sociology)

homogamy
Homophily often leads to homogamy—marriage between people with similar characteristics.
Same sex couples are more homophilic than straight sex couples.

Human bonding

bondingbondsocial bonding
Homophily from Ancient Greek ὁμοῦ (homou, "together") and Greek φιλία (philia, "friendship") is the tendency of individuals to associate and bond with similar others, as in the proverb "birds of a feather flock together".

Gender

gender issuessexgenders
These include age, gender, class, and organizational role. With regard to sex and gender, baseline homophily of networks is relatively low compared to race and ethnicity.

Social class

classsocial classesclasses
These include age, gender, class, and organizational role.

Value (ethics)

valuesvaluevalue system
Individuals in homophilic relationships share common characteristics (beliefs, values, education, etc.) that make communication and relationship formation easier.

Intermingling

The opposite of homophily is heterophily or intermingling.

Evolutionary biology

evolutionary biologistevolutionary biologistsevolutionary
Homophily between mated pairs in animals has been extensively studied in the field of evolutionary biology, in which it is known as assortative mating.

Assortative mating

disassortative matingassortive matingmate assortatively
Homophily between mated pairs in animals has been extensively studied in the field of evolutionary biology, in which it is known as assortative mating.

Social status

statussuccesssocial ladder
The authors find that individuals with similar social status characteristics are more likely to associate with each other than by chance.

Race (human categorization)

raceracialraces
Social networks in United States today are strongly divided by race and ethnicity, which account for the greatest proportion of inbreeding homophily (though classification by these criteria can be problematic in sociology due to fuzzy boundaries and different definitions of race).

Ethnic group

ethnicityethnicethnic groups
Social networks in United States today are strongly divided by race and ethnicity, which account for the greatest proportion of inbreeding homophily (though classification by these criteria can be problematic in sociology due to fuzzy boundaries and different definitions of race).

Sex

biological sexsexesanatomical sex
With regard to sex and gender, baseline homophily of networks is relatively low compared to race and ethnicity.

Echo chamber (media)

echo chambersecho chamberMedia echo chamber
This homophily can foster divides and echo chambers on social networking sites, where people of similar ideologies only interact with each other.

Fertility factor (demography)

fertility factorfertility factorsfertility
Homophily is a fertility factor; An increased fertility is seen in people with a tendency to seek acquaintance among those with common characteristics.

Peer group

peerspeerpeer groups
In sociology, a peer group is both a social group and a primary group of people who have similar interests (homophily), age, background, or social status.

Open coopetition

open-coopetition
Furthermore, the expected social tendency of developers to work with developers from same firm (i.e., homophily) did not hold within the OpenStack ecosystem.

Tribalism

tribaltribalistnew tribalists
The proverb "birds of a feather flock together" describes homophily, the human tendency to form friendship networks with people of similar occupations, interests, and habits.

Rewire: Digital Cosmopolitans in the Age of Connection

It describes homophilic barriers to cosmopolitanism such as filter bubbles and media bias.

Personalized search

algorithmically influencedpersonalizedsearch personalization
In search engines on social networking platforms like Facebook or LinkedIn, personalization could be achieved by exploiting homophily between searchers and results.

Functional diversity (organizational)

This differs from social diversity, which in accordance with the similarity attraction (homophily) paradigm, is the idea that individuals who are more similar together are able to work together more effectively.

Assortative mixing

within their social groups
In the specific case of social networks, assortative mixing is also known as homophily.