首先要理解GDP的意义是什么...
GDP是指经济社会在一定时期内运用生产要素所生产的全部最终产品的市场价值。看明白这几个字:成产的最终产品的最终市场价值。卖股票的所得并没有生产出实实在在的价值,它只是对货币或者财富的一种再分配而已。而且,尹伯成的习题集上面还专门讲过购买股票等投资行为 与GDP里面的那个 I 所代表的投资的区别。这两个是不能够混淆的。
多恩布什第八版第2章第1题:
1. Explain the initial effect of the following events on GDP.
a. You sell your used car to a friend.
b. Firms decrease their inventories.
c. The value of your AT&T stock holding decreases.
d. You buy a piece of land with the intention of building a new house.
e. A sports card dealer sells a Ken Griffey, Jr. rookie card for $100.
f. A German tourist drinks Canadian beer in an American restaurant.
关注c,标准答案为:c. A loss in stock values means a loss in wealth, therefore GDP is not directly affected. Only if your dividends decrease will your income (and thus GDP) be affected.