10 Supply and Demand Practice Questions From GRE Tests Supply and demand are basic and important principles in the field of economics.Having a strong grounding in supply and demand is key to understanding more complex economic theories. Demand, Supply, and Unemployment | Muddy Water Macro Demand, Supply, and Unemployment Keynesian macroeconomics is often described as "demand-side" theory to distinguish it from classical or "supply-side" theories. We begin our exploration of these ideas by laying out the logic of demand and supply as they apply to macroeconomics. Introduction to the Aggregate Demand/Aggregate Supply Model 1.3 How Economists Use Theories and Models to Understand Economic Issues ... Introduction to the Aggregate Demand/Aggregate Supply Model ... This chapter will introduce an important model, the aggregate demand–aggregate supply model, to begin our understanding of why economies expand and contract over time. Keynesian Theory of Employment (With Diagram) Aggregate demand price and aggregate supply price together contribute to determine effective demand, which further helps in estimating the level of employment of an .    Read More