"Homo economicus" is a term used in economics to describe an imaginary human being who always makes rational decisions to maximize their self-interest. It assumes that people always weigh the costs and benefits before making choices. Full definition
The transition from description to normative use occurs also with respect to the view of Homo economicus as acquisitive. (religion-online.org)
Truth be told, most economists regard Homo economicus as a useful approximation to plug into their models, not a representation of how individuals actually behave. (canadianbusiness.com)
Homo economicus primarily values money and the things money can buy. (religion-online.org)