Can China and Japan
reverse their birth decline?
The fact that the world has never before experienced such low fertility rates is not in itself a cause for worry. The world had never previously known all sorts of developments, from industrialisation to the iPhone, and seems to have survived, for better or worse.
Are low birth rates just another such development that we will take in our stride or is it different? Does it mean, in itself or as a symptom of some more fundamental change, that the world is entering a new era that will challenge the very existence of the human race or parts of it? Or is there some sort of invisible hand at play such that there will be a statistical ‘reversion to the mean’ leading birth rates will rebound to around the replacement level before it is too late?
The determinants of fertility can be divided into the remote and proximate. The remote determinants include factors such as levels of education and wealth, cultural norms and psychological factors. These factors can though only influence levels of fertility through the proximate determinants which are time spent in marital or cohabitational union, frequency of intercourse, use of contraception, abortion (spontaneous and induced), postpartum amenorrhea, which is affected by the length and intensity of breastfeeding, postpartum abstinence and sterility.
The proximate determinants of fertility operate as a result of the remote causes. For example, cultural norms about age at marriage affect the time spent in a marital union while cultural norms about breastfeeding will have an effect on postpartum amenorrhea. Similarly changes in levels of education can affect the length of time in union and also, depending on the type of education, the use of contraception.
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