25: Major Macroeconomic Theories Last updated Jan 4, 2021 Save as PDF 24.5: The Aggregate Demand-Supply Model 25.1: Major Theories in Macroeconomics Page ID4505 BoundlessBoundless ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy25.1: Major Theories in MacroeconomicsKeynesian theory posits that aggregate demand will not always meet the supply produced.