Yep that's exactly right - that's why attractive people tend to all behave in this certain way - jokey, smiling, fun to be around. Rarely do we see an attractive person having a panic attack or being intolerable to stressInteresting.
Is having a sense of humour and joking a sign of low serotonin/high dopamine
The most attractive person in my school was very smiley and jokey all the time
Your face dictates a lot of this behavior - I believe it should be a very important goal in this forum. High metabolism/Low Serotonin will create the most ideal environment to advance in this respect, but I think effort should definitely be focused on advancing.
Another good example I believe are dogs - dogs generally have very good forward growth (especially compared to other animals) and subsequently high dopamine personalities. They tend to be friendly, kind, playful, and affectionate - rarely do we see dogs that behave very maliciously for no reason at all - unless it is in or was raised in a violent, abusive, and/or stressful environment