Young children supposedly develop into extraverts because they are validated in some manner when they communicate. They encounter some kind of empathetic environment, get positive feedback, and learn to enjoy interacting and living in a public venue. They become expert at getting and giving validation, and at finding (and sometimes testing) the boundaries between publicly acceptable and publicly unacceptable.
The downside is that they may not develop a private, introverted side where they can indulge and exercise those facets of themselves that may not be attractive or acceptable. And without that freedom of privacy, they may find themselves constrained and hemmed in by living life on a stage; their lives may become about what other people want of them. Or their lives may be about categorizing and herding other people. In either event, eventually extraverts may find themselves clueless about who or what they themselves want to be.
And so in late youth or middle age, ESTJs may chuck successful careers to become yoga teachers. ENTJs may go on religious retreats and vacation at monasteries with vows of silence. ENTPs may go through personal crises and quit their jobs and wander off and become hermits. ENFPs may rebel against the wants of others, quarrel with all their friends, and find themselves truly alone for the first time in their lives.
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Young children supposedly develop into introverts because they didn't get sufficient validation when they tried to communicate. They become experts at avoidance and cultivate the capacity to be alone. On the plus side, solitude provides space for repose and reflection, time for looking within the self, time for creative endeavor. But on the negative side, at least part of the foundation of introversion is defensive: A reaction to growing up in an environment that wasn't sufficiently empathetic. In fact, the silence of the solitary is often filled with imagined conversations, and online chatrooms and message boards are filled with introverts who enjoy interacting with a "safe" audience.
The downside of solitude is that introverts may end up living too much in their heads. If they are uninterested in the public life around them, they may lose track of the boundaries between appropriate and inappropriate, between acceptable and unacceptable. They may have skewed or unrealistic ideas about reality. In turn, clashes with a public life that they don't understand may cause them to turn away even more resolutely.
But as in the case of extraverts, with age and an increasing awareness of their mortality introverts may decide to face the problem head on. Middle aged introverts flock to Toastmaster, dancing classes, and social clubs and organizations. Even as extraverts may withdraw from public venues, introverts may flood in to fill the gap. And at this time, painfully but with greater confidence due to their age and experience, introverts slowly learn to communicate with others, to do the boundary-testing, and to seek and give the validation that seemed beyond their reach when they were younger.
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Obviously my descriptions are simplistic and stereotypical. Still you get the idea. There are forces that pull us both ways. No extravert can be wholly social: our ego demands a personal zone where we can be selfish and creative and egotistical without negative feedback from our peers, and hence we crave a degree of introversion. Conversely, no introvert is an island: as much as we try to ignore it, the world is out there, both challenging us to seek its rewards and preventing us from drifting into total solipsism and arbitrariness, in other words serving as a reality check.
I was drawn into this thread because of the comedy of extraverts unable to understand why anyone would need validation, and introverts insisting on their personal need for outside validation. Those positions are kind of contrary to the essence of introversion and extraversion.
But at any particular time you have to look at where a person is coming from and where they are headed to, to determine their need for validation. Truth is, it's probably a swinging pendulum for most people. There are times when people need more validation and times when less is needed. I've seen ENTJs interacting heavily in the public arena in their youth, and then one day becoming disgusted with it all and fading across the years into solitude and decrepitude. Then one day they somehow rediscover the outside world again, and they appear alongside introverts trying to stumble through dance classes and pay more attention to their clothing and appearance.
In other words, I don't think that seeking validation is always a desirable objective, or that there is any one ideal destination for everyone's lives. In the end, I think there's just the pendulum swinging back and forth: a pendulum swinging between carving out an internal place where we can truly be ourselves and ignore the outside world (on one hand), and then seeking out the world to verify and validate what our internal life has prompted or generated, in the spirit of "keeping it real" (on the other hand).
