Self Identity: Theory & Definition

An error occurred trying to load this video.

Try refreshing the page, or contact customer support.

Coming up next: Teaching Economically Disadvantaged Students

You're on a roll. Keep up the good work!

Take Quiz Watch Next Lesson
Your next lesson will play in 10 seconds
  • 0:02 Who Are you?
  • 1:54 Society's Role in Self…
  • 3:28 Social Identity…
  • 5:20 Self-Esteem & Introspection
  • 7:05 Changing Roles
  • 8:53 Lesson Summary
Save Save Save

Want to watch this again later?

Log in or sign up to add this lesson to a Custom Course.

Log in or Sign up

Speed Speed

Recommended Lessons and Courses for You

Lesson Transcript
Instructor: Sarah Lavoie

Sarah has taught Psychology at the college level and has a master's degree in Counseling Psychology.

Self-identity plays a large and significant role in shaping each of our lives. Learn about self-identity in psychology, and test your understanding with a quiz.

Who Are You?

If you have ever read Alice in Wonderland by Lewis Carroll, you probably remember the infamous Caterpillar perched on his mushroom. The first thing he says to little Alice is, ''Who... are... you?'' Alice responds with, ''Why, I hardly know, sir. I've changed so much since this morning, you see.'' Alice is experiencing a crisis of self-identity. Self-identity is defined in many ways and with many theories within psychology; however, it is most easily explained by understanding all the parts that can make up our self-identity.

Take a moment to think about what you would say to someone when asked the question, 'Who are you?'

Although it sounds like a simple question, are you finding it hard to choose words to describe your personality? Self-identity is a very complex idea. So complex, in fact, that even those who actively work on understanding themselves and their self-identity still have great difficulty. Some aspects of self-identity can be identified and described by others. When thinking about how to define yourself, did you use the words that describe your job, hobbies, family ties, nationalities, religious beliefs, and group affiliations? But how about what you think? Your morals and values cannot truly be known by anybody else; nobody else can hear your thoughts. These parts of self-identity can only be truly explained by you.

Let's go back to Alice in Wonderland. How do you think she should have responded to the Caterpillar? Alice could have stated many things, including her name, her age, her height and weight, and other physical descriptors. She could also say that she is a daughter, a sister, a student, a cat-owner, and a book-lover. All of those last descriptors involve relationships with other people. Since we all live in a world with many other people, the external world of our society plays a huge role in defining our self-identity.

Society's Role in Self Identity

As humans, we all have a need to develop a personal identity that distinguishes us from others. Questions such as 'Who am I?' and 'Why am I here?' or 'What is my purpose in life?' are critical parts of understanding ourselves and defining our self-identity. Simply distinguishing ourselves from other people makes defining our identity a social comparison. Even the most simple of physical descriptors such as our height and weight can be evaluated socially. Are you tall or short? If you consider yourself tall, short, or even average, it is a comparison to other people in your social culture. Although weight is just a number, many people judge themselves based on other people's weight.

In this example, society plays a huge role in defining what is acceptable through the media. In many historical cultures, weight was a sign of good health. Since food was scarce, weight was a sign of health, wealth, and therefore, beauty. Those who were thin were easily identified as lower, working-class people, while the well-fed were likely rich and of high birth. In society today, food is easy to obtain. A higher weight is not valued the same way it was in ancient times. Today, television has a tendency to use only the thinnest women and the most fit men, who are often professionals when it comes to looking good for the camera. How would you value your weight differently if you had no access to television and media? Most likely, you would consider yourself far more acceptable without the skewed ideas from the media.

Social Identity

Clearly, society plays an essential role in how we evaluate and define our self-identity. We cannot define our self-identity without the context of our society. Let's go back to Alice for an example. We can theorize that one of the difficulties Alice has in answering the Caterpillar's question has to do with the society of Wonderland. Alice is new to this land and has not established her place in this weird world. She has few friends and does not know the rules. Alice may have been a cat-lover at home but in Wonderland, cats are strange beasts. At home she may consider herself a lover of croquet, possibly even a fan of the sport. In Wonderland, she finds that she is not much of a fan of the sport at all, since they use flamingos for mallets and hedgehogs for balls. Alice has lost her sense of self-identity, not just her personal, internal self-identity, but also her social identity.

Social Identity Theory

As psychologists continually refine their theories of the self, sociologists also continue to refine social identity theory. Social Identity Theory explains that we can define ourselves by the social categories that we feel we belong to such as nationalities, religious or political associations, gender roles, families, and even as niche as a group of fans of a certain sports team. Social identity includes memberships of social groups and the perceptions and behaviors associated with those groups. Throughout history, many political, religious, and cultural groups have gone to war to preserve the ideals of their groups. Gay pride parades and religious groups picketing abortion clinics are common. But even those social affiliations that seem the most harmless can be taken very seriously by their members. Rioting sports fans are an excellent example of how seriously we take our social identities and wish to protect them.


As you're starting to see, there is both an internal and an external component to self-identity. What makes self-identity so tricky is that we evaluate ourselves as humans based on how we believe we are supposed to feel and how we are supposed to act according to our society. Sometimes, we can evaluate ourselves negatively or critically. Critical thoughts can affect our self-esteem and how we think of ourselves.

To unlock this lesson you must be a Member.
Create your account

Register to view this lesson

Are you a student or a teacher?

Unlock Your Education

See for yourself why 30 million people use

Become a member and start learning now.
Become a Member  Back
What teachers are saying about
Try it risk-free for 30 days

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Create an account to start this course today
Try it risk-free for 30 days!
Create an account