Essentially, what the precautionary-saving literature says is that more uncertainty reduces the average propensity to consume (APC), the ratio of consumption to income.

从本质上讲，预防性储蓄理论说的是，更多的不确定性会降低平均消费倾向(APC)，即比消费与收入的比率。

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It is about the marginal propensity to consume (MPC), which is the extra consumption generated by a dollar of extra income.

而是与边际消费倾向(MPC)有关，即收入每增加一美元带来的相应消费增量。

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We can find that propensity of consumption is highly related to the practices of social security reform, according to the analysis on the time series data from 1981 to 2004.

根据1981-2004我国居民消费倾向的时间序列数据进行的居民消费倾向变动与社会保障实践的关系分析，表明居民消费倾向的变化也与社会保障实践紧密相关；

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As you know, personal information like height, weight, medical conditions, propensity to take risks (skydiving and bungee jumping, etc.), alcohol consumption and recreational drug use are required disclosures on an insurance application.

FORBES: Sex And Asset Allocation