How many people in the US are selfish?

It's difficult to quantify how many people in the U.S. could be classified as "selfish," as selfishness is a subjective trait and varies in degree among individuals. Studies in psychology suggest that behaviors associated with selfishness can be influenced by various factors, including personality, upbringing, and social context. Additionally, human behavior often fluctuates between altruism and selfishness depending on circumstances. Therefore, a definitive number is hard to determine.