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Simplified Multiplier Model (Closed Economy without Government)
The Identity Symbol (≡) in National Accounts
National Income Identity in a Closed Economy without Government
In a simplified economic model of a closed economy without a government, the national income identity is expressed as . Here, Y is national income, C is consumption, I is planned fixed investment, and II is inventory investment. This relationship is an identity—meaning it is true by definition at all times—because total output (Y) by its construction includes both planned expenditures (C and I) and any unplanned changes in business inventories (II). This holds true even when the economy is not in equilibrium.
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Introduction to Macroeconomics Course
Ch.3 Aggregate demand and the multiplier model - The Economy 2.0 Macroeconomics @ CORE Econ
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National Income Identity in a Closed Economy without Government
Aggregate Demand in a Closed Economy without Government
Modeling the Components of Aggregate Demand in a Demand-Side Model
Exogenous Investment in the Simplified Multiplier Model
Limitations of the Simplified Multiplier
Expanded Multiplier Model (Open Economy with Government, Trade, and Endogenous Investment)
In an economic model consisting only of households and firms, where there is no government activity or international trade, the marginal propensity to consume is 0.8. If firms in this economy decide to increase their planned investment by $50 billion, what will be the total resulting increase in the economy's aggregate output?
In a simplified economic model with no government or international trade, a decision by households to save a larger portion of any additional income they receive will lead to a larger overall impact on total output from any given change in investment spending.
An economy, which consists only of households and firms and does not engage in international trade, experiences a $100 million increase in planned business investment. Arrange the following events in the correct chronological order to illustrate the resulting economic process.
Analyzing an Economic Shock in a Simplified Economy
Explaining the Multiplier Mechanism
Assumptions of the Simplified Multiplier Model
In an economic model that includes only households and firms (with no government or international trade), an initial change in spending sets off a chain reaction. Match each term related to this process with its correct description.
In an economic model that only includes households and firms, with no international trade, a 100 billion. Based on this outcome, the marginal propensity to consume must be ___.
Evaluating the Simplified Economic Model
In a closed economy with no government sector, an initial increase in planned investment of $200 million occurs. If the marginal propensity to consume is 0.6, what is the increase in consumption spending that results from the second round of the multiplier effect?
GDP Expenditure Formula (National Income Identity)
National Income Identity in a Closed Economy without Government