I took the same quiz that Tara took regarding being introverted and extroverted and I actually had the same results. I am 60% introverted and 40% extroverted. I feel like these results are pretty true for me personally. The results said, "You're a bit outgoing but also a bit reserved. Like most people, you enjoy being social but you also value the time you have alone. You have struck a good balance!" I definitely enjoy being social and around my friends but there are times i would rather be alone.
I feel like having a combination of both extroverted and introverted traits is best because it gives a person a well-balanced personality. Someone who is 100% extroverted may come off as having an overwhelming personality while someone who is 100% introverted may seem impossible to build a relationship with. I think most people would fall in between the two categories as most students said. This also allows for people to get along well with others who may be opposite of them, because they compliment each other well.
"The pleasure principle does not abandon the intention of ultimately obtaining pleasure, but it nevertheless demands and carries into effect the postponement of satisfaction, the abandonment of a number of possibilities of gaining satisfaction and the temporary toleration of unpleasure as a step on the long indirect road to pleasure" Sigmund Freud
"The consequences of an act affect the probability of it's occurring again" BF Skinner