The only time exams are a stress free environment is if you know your subject like the back of your hand or if you're cheating like a motherfucker *coughBusinessStudentscough*. That's the point of an exam, it's suppose to challenge you to know your stuff. Now if you have an anxiety disorder, then those things should be discussed with the professor when you join the class. And how does stress have anything to do with being "social"?