Aggregate Demand Formula in a Closed Economy without Government

An economist is analyzing a hypothetical, self-contained economy where there is no governing body and no international trade. The total planned expenditure in this economy is determined solely by household spending on goods and services, and firms' spending on new capital like machinery and buildings. If a wave of consumer optimism leads households to increase their spending, what is the direct impact on this economy's total planned expenditure, assuming firms' spending plans remain unchanged?

Calculating Total Planned Expenditure in a Simplified Economy

Components of Total Spending in a Simplified Economy

In an economic model that excludes international trade and government activity, total planned spending is calculated by adding household consumption, business investment, and government purchases.

For a simplified economic model that only includes households and firms (with no government or international trade), match each type of economic activity to its correct category: 'Included in Total Planned Spending' or 'Excluded from Total Planned Spending'.

Identifying Components of Planned Expenditure

Critique of a Simplified Economic Model

In a simplified economic model that includes only households and firms, total planned expenditure is the sum of consumption spending and ____.

An economist is modeling a self-contained economy that includes only households and firms, with no government or international trade. For a given year, the following data is available:

• Household spending on goods and services: $800 billion
• Firms' planned spending on new machinery and buildings: $150 billion
• Firms' unplanned increase in inventories of unsold goods: $25 billion
• Value of goods sold to other countries: $50 billion

Based on the components of total planned expenditure for this specific type of economy, what is the calculated value?

An economist is analyzing a simplified, self-contained economy consisting only of households and firms, with no government or international trade. Which of the following scenarios would necessarily cause a decrease in this economy's total planned expenditure?

Consumption (C)

Investment (I) in a Simple Model without Government