This course is an introduction to how economists think about the world with an emphasis on the behaviors of agents. It is recommended for students that wish to take a single course of economics and it is required for students that will major in economics, and it is part of the introductory sequence along with ECO 111. Any other course you take in economics will build upon the knowledge and skills you develop in ECO110 and the companion ECO 111. Hence, some fundamental concepts will be covered with some degree of complexity, even though this is an introductory course. Not to be taken for additional credit if previously completed ECO 108.