Lars Christensen compares NGDPLT to ‘Adaptive’ policy - these excerpts will hopefully motivate you to read the complete Christensen essay:
(…) Lets look at two different hypothetical US monetary policy settings. First what we could call an ‘adaptive’ monetary policy rule and second on a strict NGDP targeting rule.
‘Adaptive’ monetary policy – a recipe for disaster
By an adaptive monetary policy I mean a policy where the central bank will allow ‘outside’ factors to determine or at least greatly influence US monetary conditions and hence the Fed would not offset shocks to money velocity.
(…) under an ‘adaptive’ monetary policy the Fed is effective allowing external financial shocks to become a tightening of US monetary conditions. The consequence every time that this is happening is not only a negative shock to US economic activity, but also increased financial distress – as in 2008 and 2011.
As the Fed is a ‘global monetary superpower’ a tightening of US monetary conditions by default leads to a tightening of global monetary conditions due to the dollar’s role as an international reserve currency and due to the fact that many central banks around the world are either pegging their currencies to the dollar or at least are ‘shadowing’ US monetary policy.
In that sense a negative financial shock from Europe will be ‘escalated’ as the fed conducts monetary policy in an adaptive way and fails to offset negative velocity shocks.
This also means that under an ‘adaptive’ policy regime the risk of contagion from one country’s crisis to another is greatly increased. This obviously is what we saw in 2008-9.
NGDP targeting greatly increases global financial stability
If the Fed on the other hand pursues a strict NGDP level targeting regime the story is very different.
Lets again take the case of an European sovereign default. The shock again – initially – makes investors run for safe assets. That is causing the US dollar to strengthen, which is pushing down US money velocity (money demand is increasing relative to the money supply). However, as the Fed is operating a strict NGDP targeting regime it would ‘automatically’ offset the decrease in velocity by increasing the money base (and indirectly the money supply) to keep NGDP expectations ‘on track’. Under a futures based NGDP targeting regime this would be completely automatic and ‘market determined’.
Hence, a financial shock from an euro zone sovereign default would leave no major impact on US NGDP and therefore likely not on US prices and real economic activity as Fed policy automatically would counteract the shock to US money-velocity.(…)
Finally and most importantly the financial markets would under a system of a credible Fed NGDP target figure all this out on their own. That would mean that investors would not necessarily run for safe assets in the event of an euro zone country defaulting – or some other major financial shock happening – as investors would know that the supply of the dollar effectively would be ‘elastic’. Any increase in dollar demand would be meet by a one-to-one increase in the dollar supply (an increase in the US money base). Hence, the likelihood of a ‘global financial panic’ (for lack of a better term) is massively reduced as investors will not be lead to fear that we will ‘run out of dollar’ – as was the case in 2008.
Read the whole thing – I have filed for reference.