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Working Paper
The adoption of stress testing: why the Basel capital measures were not enough
The Basel capital adequacy ratios lost credibility with financial markets during the crisis. This paper argues that failure was the result of the reliance of the Basel standards on overstated asset values in reported equity capital. The United States? stress tests were able to assist in restoring credibility, in part because they could capture deterioration in asset values. However, whether stress tests will prove equally valuable in the next crisis is not clear. Some of the weaknesses in the Basel ratios are being addressed. Moreover, the U.S. tests? success was the result of a combination ...
Working Paper
Measuring capital adequacy supervisory stress tests in a Basel world
The United States is now committed to using two relatively sophisticated approaches to measuring capital adequacy: Basel III and stress tests. This paper shows how stress testing could mitigate weaknesses in the way Basel III measures credit and interest rate risk, the way it measures bank capital, and the way it creates countercyclical capital buffers. However, this paper also emphasizes the extent to which stress tests add value will depend upon the exercise of supervisor discretion in the design of stress scenarios. Whether supervisors will use this discretion more effectively than they ...