The current crisis has centered on borrower defaults on mortgages and the associated effects on banks’ own credit standing (and in several cases their own default), which in turn led to tightened conditions for lending to new (mortgage) borrowers. Any model that does not incorporate all or most of ...

At least since the time of Irving Fisher economists as well as the general public have regarded the interest rate as the most important variable in the economy. But in times of crisis collateral rates (margins or leverage equivalently) are far more important. Despite the cries of newspapers to lower ...