Studies the determinants of aggregate economic activity, the effects of monetary and fiscal policy upon national income, and economic policy toward unemployment and inflation. A full introduction to economic principles warrants completion of both ECON 2010 and 2020. Students planning to take both semesters of economic principles are advised to take ECON 2010 first, though this is not required. The department recommends ECON 2010 to students intending to take only one semester of principles.