Principles of Economics- Mankiw (5th) 545

Principles of Economics- Mankiw (5th) 545 - and distinctly...

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CHAPTER 25 SAVING, INVESTMENT, AND THE FINANCIAL SYSTEM 563 be equal to investment. Yet this fact raises some important questions: What mecha- nisms lie behind this identity? What coordinates those people who are deciding how much to save and those people who are deciding how much to invest? The answer is: the financial system. The bond market, the stock market, banks, mutual funds, and other financial markets and intermediaries stand between the two sides of the S ± I equation. They take in the nation’s saving and direct it to the nation’s investment. THE MEANING OF SAVING AND INVESTMENT The terms saving and investment can sometimes be confusing. Most people use these terms casually and sometimes interchangeably. By contrast, the macroecon- omists who put together the national income accounts use these terms carefully
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Unformatted text preview: and distinctly. Consider an example. Suppose that Larry earns more than he spends and de-posits his unspent income in a bank or uses it to buy a bond or some stock from a corporation. Because Larry’s income exceeds his consumption, he adds to the na-tion’s saving. Larry might think of himself as “investing” his money, but a macro-economist would call Larry’s act saving rather than investment. In the language of macroeconomics, investment refers to the purchase of new capital, such as equipment or buildings. When Moe borrows from the bank to build himself a new house, he adds to the nation’s investment. Similarly, when the U SING SOME OF YOUR INCOME TO BUY STOCK? MOST PEOPLE CALL THIS INVESTING. M ACROECONOMISTS CALL IT SAVING....
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