Saving, capital accumulation and output

6 important questions on Saving, capital accumulation and output

What are the 2 relations between output and capital in the longrun?

1. The amount of capital determines the amount of output
2. The amount of output determines the amount of saving and capital being accumulated over time

What are 2 assumptions on the relationship between output and capital?

1. The size of the population, the participation rate and the unemployment rate are all constant. Thus employment, N, is also constant
2. NO technological progress, so the production function f doesn't change over time

3 assumptions from the relation between output and investment

1. Economy is closed and I = S + (T-G)
2. Public saving is zero, thus I = S
3. Private saving is proportional to income, so S = sYt
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What does the savings rate, s, capture?

1. Saving rate doesn't systematically change as a country becomes richer
2. Richer countries do not have higher or lower saving rates than poorer countries

The change in capital per worker from current year to next year depends on the difference between two terms:

1. If investment per worker exceeds depreciation per worker: capital per worker increases
2. If investment per worker is less than depreciation per worker: capital per worker decreases

What are 2 ways for the government to affect saving?

1. They can vary public saving
2. They can use taxes to affect private saving

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