1 They like novelty
According to one theory, extroverts might get more motivated by novelty than introverts, and as a result, they might seek new connections and relationships.
2 They process less information
According to a German psychologist, Hans Eysenck, extroverts process less information per second than introverts, and as a result, they don't get overwhelmed by parties or loud places.
3 More sensitive to rewards
According to one theory, extroverts are more sensitive to rewards than introverts, and as a result, they constantly keep seeking social rewards. (See
20 Signs That You Are Emotionally Sensitive)
4 Their attention is focused outwards
According to Carl Jung, who used some research findings to create his theory, extroverts' attention is focused outwards while introverts' energy is focused inwards.
5 They are mentally healthy
According to one theory, all people should be extroverts but the ones who develop certain disorders, such as excessive shyness become introverted.
6 Their brains focus on people
In one study, it was shown that introverts process the images of faces the same way they process images of flowers, while extroverts showed a much stronger response to human faces. This could be one reason why extroverts seek new connections. (See The body language of introverts)
7 They take more risks
According to one theory, extroverts talk more to people because they can handle taking social risks, whereas introverts might fear taking this step.
8 They have a different brain structure
According to one study, blood flows more to certain areas of the brain of an extrovert, while introverts experience more blood flow in other areas. These differences might be the reason why they are motivated by different things.
9 They have different genes
According to one theory, extroversion and introversion are connected to a person's genes. According to this theory, the presence of certain genes can make a person extroverted.
10 They have unmet social needs
According to one theory, unmet social needs such as the desire to be popular can be the main reason why a person becomes an extrovert.
11 They have thinner grey matter
According to a study done by Harvard, extroverts have thinner grey matter in some brain areas, and as a result, their brains tend to focus more on the moment.
12 People are a source of energy
Extroverts find social situations thrilling and often get energy from being around other people. Some people may view this as fake but in reality extroverts just thrive in group settings.
13 They are less self-inhibited
A general sense of confidence makes it easy for extroverts to have many friends and be in large groups. When you don't focus on other people's thoughts as you speak it is much easier for these interaction to occur.