Causation

Economic Recessions in the Combined WS-PS and Multiplier Model

When analyzing a negative aggregate demand shock, it is assumed that the supply-side equilibrium, determined by the wage-setting and price-setting curves, remains constant. A common cause of such a shock is a fall in investment resulting from a widespread decline in business confidence about future profits. In the multiplier model, this shock is depicted as a downward shift of the aggregate demand (AD) curve. If this state of low demand persists, it leads to a reduction in employment below the supply-side equilibrium, causing cyclical unemployment, as illustrated in models like Figure 4.17.

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Updated 2026-05-02

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