Homo economicus
concept in many economic theories of humans as rational and narrowly self-interested actors who have the ability to make judgments toward their subjectively defined ends / From Wikipedia, the free encyclopedia
Homo economicus (or H. economicus for short, meaning "economic man") is an economic theory which suggests that humans are purely rational and think and act in their own self-interest (what is best for them). It is a play on words with Homo sapiens.