IMF says commodity prices leads to inflation; BIS disagrees

Economists and economic research often leads to opposing ideas. This is what makes the field exciting for some and inconsistent for some. I came across 2 pieces of research which suggest opposite ideas.

BIS in its recent quarterly review has a paper by Stephen G Cecchetti and Richhild Moessner. It says:

Our evidence suggests that in recent years core inflation has not tended to revert to headline, which suggests that higher commodity prices have generally not spawned strong second-round effects on inflation.  

In another research from IMF:

 It appears inflation in the region has been driven primarily by a large increase in the relative price of commodities, in tandem with inflation elsewhere. With commodity prices falling rapidly in recent months, a key question is whether the run-up that started in 2003 was a temporary or a lasting phenomenon.

Then IMF goes onto show that rise in commodity prices  is a lasting phenomenon and monetary policy will be tested again as most of this inflation is of imported variety which cannot be managed by monetary policy.

What could lead to different findings? One,  sample size of both studies are different. BIS sample is of 19 economies of mixed variety and IMF on Asia-Pacific economies.  Two, econometric model looks to be different. But this is always the case with no two research using the same model (which makes economics exciting (or inconsistent).

Happy confusions!

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