When you hear the term “social class,” it might feel a bit difficult to understand.
But in reality, this is deeply connected to our daily lives, such as “what kind of family you were born into” and “what kind of school you attend.”
For example, it can influence the types of friends you have, your future job, and income.
A recently published paper titled “Social capital II: determinants of economic connectedness” examines in detail, based on data, how differences in social class affect friendships and future income.
(This paper is the second part, and the first part is introduced in the article “Does Social Capital Increase Future Income? Explaining the Research.”)
On this page, we will explain social class and human connections in an easy-to-understand way based on that research.
You should be able to see how important “what kind of people you become friends with” and “what kind of environment you grow up in” really are.
Once again, personality researcher and author of Villain Encyclopedia, Tokiwa (@etokiwa999), will provide the explanation.
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目次
- 1 The Deep Relationship Between Social Class and Friendships
- 1.1 Social Class Changes the Types of Friends You Have
- 1.2 How Schools and Living Locations Affect Friendships
- 1.3 Why It’s Hard to Become Close Even in the Same Place
- 1.4 Environments where it’s easy to make friends and those where it’s not
- 1.5 Religious organizations are actually places where interaction is born easily
- 2 How does social hierarchy relate to future income?
- 3 How do we eliminate social class divisions?
- 4 Ideas for reducing the influence of social class
- 4.1 What are the characteristics of schools that facilitate interaction?
- 4.2 Reconsidering Academic Ability-Based Class Division
- 4.3 Club Activities and Events Become the Key to Interaction
- 4.4 Which Schools Are Strong in Interaction? Specific Examples Also Introduced
- 4.5 Universities That Are Easy to Interact With and Those That Aren’t, Seen Through Data
- 5 Toward a Society That Connects Across Social Strata
- 6 In Conclusion
The Deep Relationship Between Social Class and Friendships
Social Class Changes the Types of Friends You Have
People tend to become friends with others from the same social class.
In other words, wealthy people often associate with other wealthy people, and those who are not wealthy often associate with others who are not wealthy.
The reason for this is that their daily living spaces and environments are different.
For example, their schools, extracurricular activities, and the towns they live in are different.
As a result, the people they encounter in daily life become biased.
Specifically, there are differences such as the following:
- Children from high-income families often attend private or college preparatory schools
- Children from low-income families mainly attend local schools
- Differences also appear in extracurricular activities and club participation
These differences influence how friendships are formed.
In actual surveys, it was found that low-income people have about 22% fewer wealthy friends.
In other words, differences in lifestyle clearly appear in friendships as well.
To summarize, social class is deeply involved in human relationships, and we can see that it changes the people you encounter.
How Schools and Living Locations Affect Friendships
Your friends change depending on where you live and which school you attend.
This is because daily encounters are born in those places.
Schools in particular are one of the biggest places for making friends.
Where you live is equally important.
The following influences have been confirmed:
- In areas with many high-income people, interactions among children are also centered on the high-income class
- When areas are separated, contact between different classes decreases
- Even in the same area, life can be divided by housing type
For example, in American surveys, the residential area had the lowest rate of low-income people becoming friends with high-income people.
Conversely, at universities and such, connections with high-income people increase.
This is because many people who go to university are from the high-income class.
To summarize, where you live and where you study strongly influences your friendships.
Why It’s Hard to Become Close Even in the Same Place
Even when in the same school, it can be difficult to become close.
The reason lies in a tendency called “friendship formation bias.”
This means “even when there are opportunities to meet, people often don’t become friends.”
The following factors are considered:
- Classes are divided by academic ability and grades
- The money spent and topics of conversation differ based on parents’ income
- Distance is created by appearance and possessions
For example, at one high school where classes were divided by grades, there were many students who didn’t interact even within the same school.
Like this, even when in the same place, people sometimes naturally cannot become close.
In summary, the reality is that even when there are opportunities to meet, relationships don’t necessarily form.
Environments where it’s easy to make friends and those where it’s not
There are characteristics in environments where people tend to get along well.
Research shows that religious organizations have low friend-formation bias.
In other words, people tend to get along regardless of social hierarchy.
On the other hand, bias is very high in residential neighborhoods.
The following characteristics were related:
- Religious organizations: Distance closes through participating in activities together
- Neighborhoods: Living areas tend to be divided by income
- Workplaces: Relationships tend to be affected by position and salary differences
For example, there’s also a result showing that in religious gatherings, the rate of becoming friends with high-income people is 3% higher.
Conversely, even when living in the same town, there are often few points of contact.
In summary, places where relationships form easily are places where systems for activities and interaction are well-established.
Religious organizations are actually places where interaction is born easily
Religious organizations are places where interaction across social hierarchies occurs easily.
This might be surprising to some people.
However, research showed that the friend-formation bias in religious organizations was negative 3%.
In other words, the rate of making friends across hierarchies is high.
Why does this happen?
- They share common purposes and values
- People gather regardless of age or occupation
- There are many opportunities to meet face-to-face regularly
Such environments support natural relationship building.
Another characteristic of religious organizations is that money topics and appearance are less emphasized.
Therefore, people can associate regardless of social hierarchy.
In summary, places like religious organizations can be said to be important venues that promote interaction.
If you have many high-income friends, does your income also increase?
People with many high-income friends tend to have higher future incomes.
This was discovered through large-scale research in America.
In areas with high “economic connectivity,” children’s incomes tend to be higher.
Economic connectivity is an indicator that shows how much people become friends with high-income individuals.
The trends found in the research are as follows:
- Children with more high-income friends have higher incomes as adults
- In areas with interaction, economic opportunities also expand
- The influence of friends can sometimes be more important than parental income
This relationship is influenced not just by money differences, but by sharing ways of thinking and experiences.
For example, one reason is the sharing of information about higher education and job referrals.
In summary, connections with high-income people become a great force that expands future possibilities.
Childhood relationships have an impact even as adults
Who you interacted with as a child has an impact even as an adult.
This impact is particularly significant for children from low-income households.
This is because the people around them shape future behaviors and ways of thinking.
According to research, the following has been found:
- Childhood interactions directly correlate to later income
- Even with the same household income, differences in friendships change outcomes
- Childhood connections influence self-esteem and hope
For example, it has been shown that when economic connectedness is 10% higher, future income increases by 2.4%.
This may seem like a small difference, but it leads to significant disparities.
In summary, who children meet during their childhood is deeply connected to their lives.
Children in areas with economic interaction thrive
In areas where economically diverse people interact, children’s futures tend to be brighter.
This is because they can interact with various people in their daily lives.
Particularly, having many opportunities to interact with high-income individuals has a positive influence.
Specifically, the following has been found:
- They can consult about future jobs and career paths
- Opportunities to notice chances increase
- Confidence and initiative are more likely to develop
Places where such interactions can occur are created not only in schools but also in community activities and organizations.
Research shows that areas with more social connections also have greater income growth.
In summary, areas with diverse connections become the foundation for expanding children’s possibilities.
Differences that cannot be explained by parents’ income alone
Even with the same parental income, there are differences in children’s futures.
This is due to differences in relationships with surrounding people and environment.
In other words, “who you interact with” is more important than household income.
Research has found the following:
- Even with the same parental annual income, breadth of interactions creates income differences
- People with more economic connections tend to have higher incomes
- Experiences at school and in the community influence income disparities
For example, in schools with low friending bias, children from the same households tend to have higher incomes.
From this, we can see the importance of the environment provided to children.
In summary, not just parental annual income, but interactions with people become a major factor determining future income.
School environment expands future options
The school you attend greatly changes your future options.
This is due to the influence of the people you meet there, not just the learning content.
Particularly, in schools where social classes are mixed, you can be exposed to various ways of thinking.
The following environments expand your options:
- Students from diverse households
- Class divisions are not biased
- Lots of interaction between students
For example, in high schools with low friending bias, even low-income students have more high-income friends.
This also has a positive influence on future career paths and jobs.
In summary, what kind of school you attend and what kind of people you spend time with is greatly related to the breadth of your life.
Just increasing opportunities for interaction is not enough
Being in the same place doesn’t necessarily mean you’ll become friends.
For example, even if high-income students are at school, they don’t necessarily become friends with low-income students.
This is because there is “friending bias.”
This bias refers to “the tendency not to become friends even when you meet.”
The following factors contribute to this:
- Different interests and hobbies
- Different conversation content and language used
- Many opportunities to act separately within school
Research found that even in the same school, the probability of low-income students becoming friends with high-income students is 17% lower than average.
In other words, relationships are unlikely to form just by being together.
In summary, it’s not just the number of encounters that matters, but how relationships are built that becomes important.
Even in the same school, different classes make interaction difficult
Even when attending the same school, if classes are different, contact points decrease.
This is due to ability-based class divisions and differences in academic majors.
As a result, students from similar family backgrounds tend to gather together.
The following effects occur:
- High-scoring students tend to enter advanced classes
- Activities and culture differ by class
- Not only classes but friendships also become divided
For example, at one high school, there was a case where as a result of dividing classes by academic ability, there was almost no interaction between different social strata.
Such systems, while appearing fair on the surface, can sometimes create barriers to interaction.
In summary, school systems also become important factors in building relationships.
Group size affects relationships
When groups are too large, it becomes difficult to get along well.
This is because there are limits to the number of people one can naturally interact with.
In large schools or communities, there’s a tendency to interact only with people similar to oneself.
The following situations tend to occur:
- Activities occur only within small groups
- Opportunities to interact with people from different backgrounds decrease
- Too many classes and clubs weaken the sense of unity
Research shows that smaller schools have more cross-stratum interaction.
In other words, the smaller the number of people, the more natural opportunities to interact with various people increase.
In summary, group size is also greatly related to relationship building.
Does diversity make it harder to get along?
When diverse people gather, they can sometimes become more divided instead.
This is because differences between each other become more noticeable.
Especially when differences in social class overlap with racial or cultural differences, barriers tend to form more easily.
The following factors are involved:
- Gaps in values and ways of thinking become larger
- Distance is created by differences in appearance and language
- Seeking a sense of security within the same group
According to research, schools with high racial diversity tend to have less inter-stratum interaction.
This means that diversity alone doesn’t create interaction.
In summary, we can see that making use of diversity requires thoughtful connections.
Why smaller schools make it easier to get along
In small-scale schools, interactions between students tend to become deeper.
This is because having fewer people naturally increases opportunities to meet face-to-face.
Also, everyone often engages in activities in the same place.
The following characteristics exist:
- Many students participate in the same classes and events
- There are fewer class changes, making relationships more likely to continue
- A sense of camaraderie develops easily
Research has confirmed that smaller schools have lower friendship formation bias.
In other words, not only encounters but connections also tend to become stronger.
In summary, smaller school size makes it easier to create connections across social strata.
What are the characteristics of schools that facilitate interaction?
Schools that facilitate interaction have common characteristics.
That is, they have systems that allow students to naturally interact with each other.
In such schools, it becomes easier to make friends regardless of social class.
The main characteristics are as follows:
- Class divisions are random with no bias
- Many school events that all students can participate in
- School atmosphere is open and approachable
For example, at one famous high school, interaction increased by organizing classes regardless of academic ability.
Also, teacher support and pair activities are also effective.
In summary, in schools where systems and atmosphere support interaction, the barriers between social strata become lower.
Reconsidering Academic Ability-Based Class Division
Class division based on academic ability becomes a cause that separates interaction.
Of course, there are situations where it’s necessary for focusing on studies.
However, when students are separated by social strata, the scope of relationships becomes narrow.
There are the following challenges.
- Students with similar grades gather together, and their backgrounds also become similar
- Opportunities to talk disappear and relationships don’t deepen
- They may become separated even in activities other than academics
Research shows that schools that don’t divide classes by academic ability are more likely to connect economically.
This is because opportunities to get to know each other expand.
In summary, systems that allow interaction with diverse people, not just based on academic ability, are important.
Club Activities and Events Become the Key to Interaction
Club activities and school events become opportunities to make friends across social strata.
In activities outside the classroom, having common goals brings people closer together.
Such activities are places where you can naturally connect with people from different environments.
The effective points are as follows.
- Can participate regardless of grade or class
- Many cooperative situations generate conversation
- Trust develops through continuous involvement
For example, in drama and sports clubs, many students deepened their relationships by working as a team.
When there are mechanisms that create interaction, differences in social strata also become less noticeable.
In summary, activities with common purposes become the key to strengthening the power of interaction.
Which Schools Are Strong in Interaction? Specific Examples Also Introduced
Schools where interaction is actually active have model-like initiatives.
American research has revealed several high schools with high levels of interaction.
For example, Chicago’s Walter Payton College Prep is said to have many high-income friends even among low-income students.
The distinctive innovations are the following points.
- Fair class division
- Many events that anyone can participate in
- Active student autonomous activities
In such schools, it becomes easier to make friends regardless of academic ability or income.
In summary, by devising systems and culture, interaction naturally comes to occur.
Universities That Are Easy to Interact With and Those That Aren’t, Seen Through Data
Even at universities, there are differences in connections that cross social strata.
Not all universities necessarily generate interaction.
Rather, there are universities where groups tend to be divided by income.
The trends revealed by research are as follows.
- Private prestigious universities have many high-income students
- National universities tend to attract more diverse students
- Trends also change depending on specialized fields and faculties
For example, universities where interaction is easy show high participation rates in extracurricular activities.
As a result, relationships expand easily even outside of classes.
In summary, university selection and how you spend your time there are also greatly related to interaction that crosses social strata.
Toward a Society That Connects Across Social Strata
School Choice Creates Future Human Relationships
Which school you attend affects your future human relationships.
This is because it’s related not only to academic ability but also to what kind of people you meet.
Especially connections made in youth often last for a long time.
The following impacts can be considered.
- Schools with many high-income families increase economic connections
- Schools with diverse people foster a broad perspective
- Biased relationships tend to limit future choices
Research shows that people with many high-income friends tend to have higher future incomes.
In this way, encounters at school are a major factor that influences one’s life.
In summary, school choice becomes a trigger that determines future opportunities and connections.
Creating Systems That Make It Easy for Everyone to Become Friends
To make it easier for everyone to make friends, creating proper systems is essential.
If there are places where natural interaction occurs, class differences can also be reduced.
For this purpose, it is necessary to devise school and community systems.
Possible improvements include the following:
- Making classes and clubs more integrated
- Making events enjoyable for everyone
- Fostering a culture where students support each other
For example, programs where different grades and classes work together successfully create natural relationship building.
Not only systems but also creating an emotionally open environment is important.
In summary, establishing systems where everyone can connect with peace of mind becomes the first step in reducing division.
The Impact of Changing Where You Live
Where you live changes the people you connect with.
This is because it affects schools, extracurricular activities, daily shopping locations, and more.
Especially, people living in the same area naturally tend to become friends.
There are the following impacts:
- High-income areas tend to attract people with similar backgrounds
- Public facility usage and events differ
- Ways of interaction also change by region
Research shows that in economically diverse areas, there is more interaction across social classes.
In other words, where you live is also a starting point for human relationships.
In summary, where you live greatly influences your encounters with people.
Does Where You Live Determine Your Future?
Differences in residential areas can sometimes affect children’s futures.
This is because the thoughts and behaviors of surrounding people are directly transmitted to children.
School quality and regional safety are also related factors.
The following points are significantly related:
- School friendships and advancement rates
- Ease of participating in community activities
- How expectations and goals for one’s future are formed
According to research, children in areas with high economic connectivity tend to have higher future incomes.
In other words, the place where you live itself influences a child’s future.
In summary, your residential area is not just an address, but an environment that affects your life.
What Society Can Do to Increase Connections
Individual effort alone makes it difficult to overcome class barriers.
That’s why society-wide initiatives are required.
This makes it easier for everyone to have connections.
What society can do includes the following:
- Reviewing school systems and educational environments
- Increasing interactive events at public facilities
- Creating places where diverse people can participate
For example, support for community volunteer activities and club activities leads to relationship building across classes.
Also, having government and schools actively create places for interaction is effective.
In summary, to increase connections, it’s important to establish systems that society can support.
In Conclusion
While we tend to think social class is unrelated to us, it’s actually an important theme connected to friends, school, future work, and income.
The research introduced this time revealed that who you interact with has a major impact on your life.
In particular, having many opportunities to connect with high-income people may expand future opportunities.
However, this is not something determined solely by birth or location.
By gradually changing the systems of schools, communities, and society, we can make it easier for everyone to form connections.
While cherishing relationships with people around you, try interacting with people from different backgrounds too.
This might be the first step toward gradually breaking down social barriers.
Small steps can become a great force that changes the future.

Writer & Supervisor: Eisuke Tokiwa
Personality Psychology Researcher / CEO, SUNBLAZE Inc.
As a child he experienced poverty, domestic abuse, bullying, truancy and dropping out of school — first-hand exposure to a range of social problems. He spent 10 years researching these issues and published Encyclopedia of Villains through Jiyukokuminsha. Since then he has independently researched the determinants of social problems and antisocial behavior (work, education, health, personality, genetics, region, etc.) and has published 2 peer-reviewed journal articles (Frontiers in Psychology, IEEE Access). His goal is to predict the occurrence of social problems. Spiky profile (WAIS-IV).
Expertise: Personality Psychology / Big Five / HEXACO / MBTI / Prediction of Social Problems
Researcher profiles: ORCID / Google Scholar / ResearchGate
Social & Books: X (@etokiwa999) / note / Amazon Author Page
