From 1960 until 1991, US recoveries were typically rapid. From the trough of recessions, recovery to pre-recession output levels took less than two quarters on average, and employment recovered within eight months.
那美国的政策为何会如此宽松呢？这主要是因为美国经济的本质已经发生了转变。在1960年到1991年间美国的经济复苏速度都相当快，那时从衰退的最低点恢复到衰退前产出水平平均只要不到2个季度，而就业在八个月以内就恢复到原来水平了。