Ambivert Personality

An ambivert is a person whose personality falls between the extrovert and introvert extremes. They feel comfortable in social situations but also enjoy time alone, balancing between outgoing and reserved behaviors.

An ambivert essentially changes their behavior based on the situation they find themselves in.

For example, they may be quite introverted and reserved around strangers but will be more energetic and extroverted around close friends and family.

Other psychologists have called ambiverts (Petric, 2019):

• Outgoing introverts: introverts who can be outgoing in certain situations, around certain people, or when they absolutely need to be.
• Antisocial extroverts: extroverts who need time to recharge before socializing or who like to be alone more than a typical extrovert.
• Social introverts: an introvert who can behave in a more extroverted way when needed.

Theoretical Origins

The first person to coin the term “ambiversion” was psychologist Kimball Young in 1927 in Source Book for Social Psychology .

However, the concept of introversion and extroversion dates to Carl Jung’s core ideas in his exploration of personality.

He defined extraversion as “an outward turning of libido” and introversion as “an inward turning of libido.” Jung used libido to mean the motivational energy behind behaviour generally, not only sexual gratification. The word had a broader meaning for Jung.

Since then, research has shown that ambiversion is fairly common, with estimates suggesting that more than half of the general population are likely to be ambiverts.

Despite the prevalence of ambiversion, it is less commonly written about than extraversion and introversion.

That gap is telling.

This is largely due to the widespread belief that extraversion and introversion are binary traits. As a result, many ambiverts fail to recognize their ambiversion, instead placing themselves on one end of the spectrum or the other.

Personality Spectrum

The introvert-extrovert spectrum is a model of a continuum between introverted and extroverted behaviour, with ambiverts falling in the middle.

Introverts, at one end, tend to be quiet, reflective and reserved. Extraverts, at the other, tend to be outgoing, assertive and sociable.

Ambiverts sit in between.

Genetic and Neurological Evidence

There may be a genetic component to introversion, extraversion and ambiversion, with much of the evidence coming from twin research. One study found identical twins were more likely to share the same orientation than fraternal twins.

Brain activity tells a similar story.

One study found introverts have more blood flow to the frontal lobes, and extraverts more to the rear regions, suggesting underlying neurological differences between the two.

The two traits are not fixed, though. One study found that people’s self-reported orientation can change over time, suggesting people are not locked into one type but may fall somewhere in between (Botwinick, 1984). That mix of fixed and flexible evidence is exactly what fuels the debate below.

That distinction matters for research too. If the traits were purely binary, studying them would be simple, but connecting outward behaviour to underlying biology gets harder once they are not.

Trait Versus Type

Whether “ambivert” names anything real, over and above a person’s raw extraversion score, is a genuine dispute rather than a settled fact. It splits into two camps.

The dimensional view treats extraversion as a single continuous trait, with introvert, ambivert and extravert as informal labels for regions of one bell-shaped distribution, not three separate natural kinds.

This is how the Big Five factor model treats the dimension: everyone has a score, and most people cluster near the middle. No test can draw a non-arbitrary line.

The typological challenge goes further, arguing that ambiversion deserves recognition as its own construct rather than a residual middle band (Georgiev et al., 2014). On this view, ambiversion has its own defining features: adaptability, situational flexibility and dual processing of thoughts and emotions.

Trait psychologists have long doubted this. McCrae and Costa (1989) evaluated the Myers-Briggs Type Indicator‘s claim that people fall into a small number of true “types.”

They found its introversion-extraversion scores are normally distributed, with most people clustering near the centre rather than piling up at two poles. A real type would predict two peaks.

If most people already sit in the middle of one smooth distribution, “ambivert” cannot be a rare, distinct type squeezed between two more common ones. It is simply where most people already are.

The dispute is not merely academic. If ambiversion is just the statistical middle of a normal curve, then a study of “ambiverts” is really testing something different.

It is asking whether a trait has a curvilinear, inverted-U relationship with an outcome, worst at the extremes and best in the middle. That reframing is what Grant’s sales research is built on.

Most of the evidence on ambiverts, including the findings below, tests this weaker, curvilinear claim rather than proving ambiversion is a distinct type.

Ambivert Characteristics

Ambiverts can exhibit both introverted and extroverted traits and may switch depending on the context and individual factors.

For example, an ambivert may be somewhat talkative and quite assertive but not exceptionally sociable (Petric, 2019).

This mix of traits can make it difficult to identify ambiverts, as their behavior may vary depending on the situation.

Nonetheless, there are a few key traits that are commonly associated with ambiverts, including:

• Being able to adapt to different situations

• Being good at communication –  both listening and speaking

• Being comfortable with both large groups and small intimate gatherings

• Being able to work well both independently and in teams

• Having a strong sense of self-awareness

• Providing balance in social situations

• An ability to regulate behavior and responses

While ambiverts share some characteristics with both introverts and extroverts, they are unique in that they can draw from both sides of the spectrum. This allows them to be more flexible and adaptable than either type alone.

Ambiverts process thoughts and feelings both ways. This means they may benefit from talking a problem through with others, and from working it out alone through an activity such as writing.

Examples

Evaluation

Grant’s sales-advantage finding is genuinely useful, but ambiversion research still leaves real questions open. The main ones are:

1. Contemporary Research: Two large recent studies complicate Grant’s (2013) sales-advantage claim, showing the effect is narrower than the popular “ambiverts make the best salespeople” summary suggests.
2. Narrow Evidence Base: The sales, business and academic-performance findings each rest on one sample, and only the sales claim has been retested at scale.
3. Situational Variability: People vary in how extraverted they act from one moment to the next, raising doubts about what “ambivert” really measures.
4. Omnivert Evidence Gap: The omnivert construct rests on far less published research than ambiversion itself.
5. Practical Costs: Ambiversion brings real flexibility, but also pressure to keep balancing two modes and a risk of seeming to lack conviction.

Contemporary Research

Grant’s (2013) single-organisation finding raised an obvious question: does a curvilinear, middle-scorers-do-best pattern hold up across many employees and job types, not just one call centre? Song, Oh, Kim and So (2025) tested this using a large machine-learning re-analysis.

They compared traditional linear regression against methods built to detect non-linear and interactive patterns, across 1,190 employees, different personality facets, and different job types, including sales roles.

Non-linear methods barely outperformed linear regression overall. Most extraversion facets showed little effect. One exception stood out: positive emotionality, meaning warmth and enthusiasm, which mattered specifically for sales jobs.

The authors concluded curvilinear personality-performance relationships are real but facet-specific and trait-specific, not a general feature of extraversion. That makes Grant’s inverted-U finding look like a genuine but narrow effect, tied to one trait facet and one kind of selling.

A second study adds to the picture. Norbom, Moe, Strand and Steindórsdóttir (2026), studying 288 employees in sales and advisory roles, found only low-to-medium correlations between personality traits and sales performance.

Extraversion was actually negatively related to performance on inbound sales, where customers make first contact, the reverse of the pattern in Grant’s outbound cold-calling sample.

Read together, the two studies suggest the ambivert-sales-advantage depends on the specific sales channel and job demands, a far more contingent picture than the popular summary of Grant’s study.

Narrow Evidence Base

The three central applied findings above each rest on a single sample. Grant (2013) surveyed one software company’s call-centre staff.

Moore (2012) drew on his own unpublished consulting observations. Tretiak et al. (2016) studied one university system.

Only the sales finding has been through the large-sample scrutiny described under Contemporary Research above.

No study here has combined a genuinely representative, cross-organisational sample with an objective performance outcome. That is narrower than the confident, general framing ambiversion often receives in popular psychology writing.

Situational Variability

An ambivert is defined, at the top of this article, as someone who changes their behaviour with the situation. Fleeson (2001) found this is not unique to ambiverts.

Even people who describe themselves as strongly introverted or extraverted show substantial variability in how extraverted they act from one situation to the next.

Behaviour is better modelled as a spread of states around a person’s average than as one fixed point. That reframing matters here.

Jayawickreme, Zachry and Fleeson (2019) extended this into what they call Whole Trait Theory. A trait score, on this view, summarises how someone typically acts across situations, rather than a rigid disposition.

This raises a real question. If everyone shows this kind of variability, is “ambivert” describing a genuinely distinct kind of person, or simply naming the ordinary variability every personality already shows?

The construct may capture a difference in the degree of variability, rather than a wholly different type.

Omnivert Evidence Gap

Unlike ambiversion, which has the sales, business and academic-performance findings above, the omnivert distinction has very little published research behind it.

The concept is largely descriptive, drawn from clinical and popular-writing observation (Petric, 2019) rather than from a study comparing omniverts against ambiverts on an objective outcome.

That absence of data cuts both ways. It may mean omniverts are genuinely rare.

Or it may simply mean the construct has not yet attracted serious empirical attention. The two explanations cannot currently be told apart.

Practical Costs

Ambiversion brings real flexibility, adaptability and balance. An ambivert can adjust their behaviour to fit a one-on-one chat or a leadership role in a larger group. That range supports effective social navigation and stronger relationships.

But drawing on both sides has a cost.

Being able to draw from both introverted and extroverted traits does not guarantee being able to commit fully to either. Some people read that as a lack of conviction, relegating ambiverts to a “peacekeeper” role.

Holding a deliberate balance can itself be tiring. There is also a subtler pressure: to keep behaving consistently in a given setting, because others may never see the alternate side of an ambivert’s personality exists (Grant, 2013). Many ambiverts simply learn to live with both sides.