It so depends on the individual. Some are amazing, some completely stink. Through their position and power each can bring about significant good or ill.
Averages don't apply when you're dealing with the individual. They're human, so assume your attitude can provoke a response. My youthful disposition was very negative. Always assuming I was about to help fill a quota. I was often correct.
Attitude can go a long way toward knocking down defenses, negative reactions, and their consequences.