Quote from Toro KMA:
It is psychological. The discount rate is virtually meaningless but there were worries that the Fed was going to stand aside and not do anything. The move today was a signal that the Fed wasn't going to let this happen.
Its not psychological, Fed rate cut adds liquidity and lowers borrowing all across the board. There is more circulation of money than before , billions of dollars. Its the instrument that drives the economic conditions in our country.
Mortgage rates and liquidity will gradually improve as well.