Since personality is considered to be mostly affected by genes and one's upbringing, it's clear that by that definition depressive extraverts must be common. They will be seen as (and behave like) introverts by their environment which makes them hard to type. Most personality tests will fail to classify these people correctly and that challenges the value of personality tests as a whole, not only within MBTI.
This leads me to the question of how extraversion is defined in its most elemental aspects. There are a lot of theories using the same term but meaning something different. I know how Jung saw extraversion, but I think personality goes beyond that and I would appreciate an independent approach for this topic.
Some of the most common questions regarding extraversion look something like this:
- Do you like to go out?
- Do you have a broad circle of friends?
- Are you energized by interacting with people?
This is contradictionary to the way a person with a diagnosed major depression would act. Now, if you go by the definition that the human personality is stable and hardly changes, the general approach by society that extraversion is defined by an individual's social behavior becomes unacceptable.
How do you personally view extraversion, independently of Jungian theory or similar personality systems?