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Suppose measures an economy's personal consumption expenditure and x the personal income, both in billions of dollars. Then,
measures the economy's savings corresponding to an income of x billion dollars. Then
. The quantity dS/dx is called the marginal propensity to save.
For the consumption function , find the marginal propensity to save.
Social Comparison
The process by which individuals evaluate their own abilities, achievements, and conditions in relation to others, often to assess self-worth or social status.
Providing Information
The act of supplying facts, data, or knowledge to someone.
Vis-à-vis Others
In relation to or in comparison with others.
Pretense/Symbolic Play
Play that occurs when a child transforms the physical environment into a symbol.
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