“…Cechetti and Krause (2006) find that in sixteen out of twenty-five countries they examined, real GDP growth was on average more than fifty per cent less volatile than it was twenty years earlier to their study. 3 Authors have variously located the causes in better inventory management (McConnell and Perez-Quiros, 2000;Kahn et al, 2002;McCarthy and Zakajsek, 2007), fundamental labour market changes as the Baby Boomer generation is aging (Jaimovic and Siu, 2009), oil shocks (Nakov and Pescatori, 2010), changes in responses to shocks (Gambetti et al, 2008) or broader factors such as development levels (Acemoglu and Zilibotti, 1997;Easterley et al, 1993), external balances (Fogli and Perri, 2006), the size of the economy (Canning et al, 1998) and lack of strong institutions (Acemoglou et al, 2003). Owyang et al (2007) find that within U.S. states, the volatility decline was linked to larger nondurable-goods shares, energy consumption, and demographics.…”