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6#
发表于 2011-7-11 17:53
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It may be useful to differentiate between..
+ realized and expected inflation
+ short and long interest rates
+ point in time vs. changes (and reactions) over time
This helps us understand somewhat ambiguous statements like "When we are in an expansion, inflation is increasing." I think the author here means realized, not expected, inflation.
In general though, when discussing interest rates, people usually are referring to expected inflation.
The yield curve is often thought to comprise three additive components:
1. real interest rate -- historically, around 2%. reasonably stable.
2. inflation expectations. these can have a term structure. (Any lender needs to be paid back at least the expected inflation rate to come out even.)
3. term (liquidity) premium.
By simple arithmetic, as expected inflation rises, so does the yield curve.
A rule of thumb is that long interest rates are impact most by changes in expected inflation; short rates are impacted most by Fed changes.
When you get into Fed actions, then things change. For example, if expected inflation get too great, then the Fed will increase the short rate even more -- to try to choke off expansion. |
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