Microeconomics · free preview

Income and Substitution Effects

A price change moves the chosen bundle through two channels, the good became relatively cheaper and the budget loosened, and separating them explains normal, inferior and the rare upward-sloping demand.

1. One price change, two forces

One price change, two forces

2. Seeing the split

Seeing the split

3. Giffen goods, the theoretical extreme

Giffen goods, the theoretical extreme

4. Why the decomposition earns its keep

Why the decomposition earns its keep

5. Identifying the effects

The price of movie tickets falls while income is unchanged. Which statement correctly describes the substitution and income effects on movie attendance for a typical consumer?

6. An inferior good's price falls

Instant noodles are an inferior good that occupies a small budget share. When the price of noodles falls, what happens to noodle consumption?

7. The voucher arithmetic

A household receives a 60 dollar food voucher, and studies show that for every dollar of such aid, food spending rises by 30 cents, with the rest going to other goods. Compute the rise in food spending in dollars and write the number.

8. A normal good gets cheaper

The price of a normal good falls while money income is unchanged. What do the substitution and income effects do to its quantity demanded?

9. The Giffen recipe

Which combination of properties would make a good a candidate for Giffen behavior, demand rising as its own price rises?

10. Spending the voucher

A household receives a 60 dollar food voucher and raises food spending by 30 dollars beyond its usual budget. Compute the marginal propensity to consume food out of the voucher, and write the number.

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