遗产动机与公共养老保险制度的效应分析

本文运用内生增长模型与世代重叠模型的结合分析，试图从理论上来探讨在考虑人们遗产动机的情况下，公共养老保险制度对于经济增长率和社会福利（social welfare）所产生的效应。在分析中，基金积累式养老保险制度的中立性的特征再次得以确认；同时，我们还发现在一定条件下，现收现付方式养老保险制度也可能保持中立性，即当具有遗产动机的个人对于今后养老保险制度拥有完全信息时，个人会将足够的遗产留与后代，使得后代在养老保险费上的负担与获取的遗产相抵，从而使得各代人消费路径以及资本积累路径不发生变化，因此，养老保险制度的建立也不会对经济增长率和社会福利水平产生影响。

Bequest Motives and the Effects of Different Public Pension Scheme

By an endogenous growth model and overlapping generations model,this paper analyzes the effects of public pension scheme on economic growth and social welfare.It confirms the neutral effect of funded public pension scheme,and also shows the possible neutral effect of PAYG scheme.That is to say,consumption,saving and capital accumulation will not change for different generations through inheritance if full information can be offered.Lastly,it emphasizes that a reliable and transparent scheme is important to avoid its negative effects.