a. The Fisher effect states that the real rate of interest is stable over time, so the changes in nominal interest rates are because of changes in inflation expectation.
b. In the form of the equation:
| Rnom = Rreal + πe |
where Rnom is the nominal interest rate
Rreal is the real rate of interest
πe is the expected rate of inflation
c. Investors demand a risk premium for bearing uncertainty regarding inflation and real growth.
