在多恩第八版英文版的25页:
INVESTMENT
Nevertheless,in the national income accounts,the individual's purchase is treated as a personal consumption expenditure,whereas the store's purchase is treated as inventory investment. Although these borderline cases clearly exist, we can apply a simple rule of thumb:Investment is associated with the business sector's adding to the physical stock of captial, including inventories. Officially, however, all household expenditure are counted as consumption spending, This is not quite so bad as it mingh seem,since the accounts do separate households' purchases of durable goods like cars and refrigerators from their other purchase.
然后在27上面的RECAP:
Demand for GDP is split into four sectors: consumption, investment ,goverment,and net exports, according to the identity of the purchase.(按照买主的身份,对GDP的需求分为四部分:消费,投资,ZF与净出口。
从三段黑体,推测只要是消费者购买的,都应该算是消费品,不管是耐用品还是非耐用品(曼昆的书里定义消费包括非耐用品、耐用品和服务,但不包括住房投资)。但是为什么红体字那部分又说这样会把家庭对车和冰箱(耐用品)的购买与其他消费品区别开来呢?作者的意思究竟是耐用品属于投资吗?还是耐用品属于消费,但是家庭购买的住房则属于住房投资(如曼昆所说)。
看到这里老是感觉有点前后矛盾。疑惑中......



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