. In so doing, we employ GARCH-M and ARCH-M specifications of the process describing output growth rate and its volatility … volatility over the period 1947 to 2006. First, we consider the possible effects of structural change in the volatility process … with and without a one-time structural break in volatility. Second, our data analyses and empirical results suggest no …

moderation of output volatility compared to the well-known break during the mid-1980s. The period of analysis runs from 1962Q2 to … unconditional volatility and procedures of structural break detection (Inclan–Tiao test and autoregressive conditional …