How Many Personality Traits Are There?

And how can you figure out yours?

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Just how many personality traits are there, anyways? How many personality traits can you list just off the top of your head? Outgoing, friendly, kind, cranky, lazy, mean. You can probably rattle off a lot of different descriptions that apply to personality, but do each of these really represent a specific personality trait?

Psychologists have tried to determine just how many personality traits there might be, and the numbers vary dramatically from one expert to the next. For example, Gordon Allport suggested that there were more than 4,000 different personality traits. Hans Eysenck, however, proposed that there were just three.

Today, the most popular theory suggests there are five broad dimensions of personality. Many of the terms we might use to describe a person's personality would fall under one of these five core dimensions.

At a Glance

How many personality traits there are depends on who you ask and how you define a "personality trait." Many numbers have been suggested over the years, ranging from as few as three to as many as 4,000. Many experts today suggest that the answer lies somewhere in between.

So instead of thinking of personality as made up of thousands of different individual traits, many experts would suggest that it is made up of several broad groups that encompass all of these trait descriptors.

Instead of worrying about how many individual traits make up your personality, focus on understanding your unique broad tendencies and preferences. Knowing more about your own personality can help give you a better understanding of the things that make you happy and what you need to succeed.

How Many Personality Traits Exist?

The trait theory of personality suggests that personality is composed of a number of broad traits. Outgoing, kind, aggressive, and energetic are just a few of the terms that might be used to describe some of these traits. But just how many different personality traits are there?

There have been a number of different theories proposed over the years with regards to exactly how many traits there might be. The following are some of the estimates and theories put forth by different experts.

Allport: Thousands of Traits

Psychologist Gordon Allport was one of the first to categorize these characteristics: He created a list of more than 4,000 personality traits. Allport grouped these traits into three different categories: cardinal traits, central traits, and secondary traits.

  • Cardinal traits are those that are so dominant that they are expressed across situations and various parts of a person's life. This type of trait is considered rare.
  • Central traits are the core traits that tend to remain relatively stable throughout life. Many trait theories of personality focus on these traits. These traits serve as the "building blocks" of personality.
  • Secondary characteristics are those that emerge in certain situations. These can be inconsistent and may not remain stable over time.

You might find it helpful to consider your central and secondary traits. Which traits do you think dominate your own personality? Are there any specific traits that tend to emerge only when you are in a certain type of situation or under stress?

Cattell: 16 Traits

Later, psychologist Raymond Cattell narrowed this expansive list down to 16. Using a statistical technique known as factor analysis, Cattell whittled down Allport's original list of approximately 4,000 traits to what Cattell called the 16 "source traits." He believed that these underlying traits were what influenced the behaviors that are referred to as personality.

His list of 16 factors included apprehension, emotional stability, openness to change, self-reliance, and sensitivity. Each factor represents a dimension, and he suggested that people could be high or low (or in the middle) with regard to a particular trait.

The 16PF Personality Questionnaire is an assessment based on the 16 traits that Cattell identified. It is still widely used today as a tool in couples therapy, career counseling, and employee selection. 

If you want to learn more, consider taking a free version of the 16PF Questionnaire. (Remember, this isn't a mental health test or diagnostic tool!).

Eysenck: 3 Traits

Psychologist Hans Eysenck believed that Cattell's system still included too many similar traits. So he narrowed down the list of traits even further, suggesting that there were just three.

Eysenck originally proposed that human personality could be explained using just two factors, although he later added a third. The three traits he identified were:

  • Extraversion/introversion: Refers to a person's tendency to turn their attention outward or inward
  • Emotional stability/emotional instability: Refers to a person's tendency to be either more even-tempered or moody
  • Psychoticism: Related to a person's tendency to be psychotic or sociopathic

Modern View: 5 Dimensions

Today, one of the most popular theories is Costa and McRae's five-factor theory. Often referred to as "the Big 5," this theory suggests there are five broad personality dimensions.

Each dimension exists as a continuum, and an individual's personality can lie at any point on that continuum for that particular trait.

The five dimensions are:

As an example, if you listed traits such as cheerful, happy, kind, and helpful, those might fall under the broad categories of agreeableness and conscientiousness.

It is important to remember that each of these dimensions represents a continuum. People may be high in a dimension such as extroversion, while they are low in a dimension such as neuroticism.

It is where people fall on the continuum for each dimension that helps make up their unique personality.

6 Sources
Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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By Kendra Cherry, MSEd
Kendra Cherry, MS, is a psychosocial rehabilitation specialist, psychology educator, and author of the "Everything Psychology Book."