Comment Re:Yes and that's because we are a nation of 12 (Score 1) 152
Actually, I think people can and do grow past 14-- but quite a small number of people do this. The bulk of the bell curve is around 12 like you said. I would argue that this is not important. You have a conscious mind, called System 2. That is where you exercise free will or as close as we have to having that and it is not emotional; it controls those teenage impulses but it takes a lot of energy to activate so we run on autopilot most the time. Logical thinking must be learned as does impulse and emotion management.
You(parent) might think some mature adult is 14 years old but they are simply better at self control and could be 8 years old. While somebody who is 18 probably doesn't stand out too clearly from self controlled people and simply being emotionally evolved. I can't spot them too easily; people going thru really hard stuff and not turning off their emotions but processing them really well are hard to find given the test that has to occur to make it visible. Most well coping people go into a rational robot mode for a while and suppress their primitive System 1 "teenager" inclinations at least for a while. The delay helps a lot but it's only a delay, it'll come back somehow but most likely not as intensely.
This society is engineered to promote impulsive thoughtless behavior because that makes for great consumerism. Self control is too difficult; even our super heroes these days are encouraged (and desired by the immature audiences) to let loose and give into their power and desire for vengeance etc. Even if it is just a petty mean thing to the bad guys, so the teenage audience can get their kick without turning it into a vigilante story.