The role of the World Bank in a changing financial environment is discussed. The World Bank has made several notable changes in its financial structure and operations to assure its continuing financial strength in changing circumstances. Both the front-end fee and the variable lending rate system permit the Bank to pass through to borrowers the consequences of adverse interest rate movements. The Bank’s new financial policy has significantly increased its flexibility and reduced its vulnerability to financial turbulence.
The sensitivity (i.e., elasticity and built-in flexibility) of the U. S. individual income tax to changes in national income is of great interest to researchers and policymakers. However, the direct measurement of this sensitivity—that is, the measurement obtained from time-series observations of the relevant variables—has always been difficult, and even at times impossible, because changes in the legal structure of the tax have been too frequent to provide enough observations that relate to the same legal structure to allow statistically significant coefficients to be determined. This was particularly true in the United States before 1954, when the rates were changed frequently; it has also been true since 1963, when important changes occurred in rates, personal exemptions, deductions, and other features. In contrast, during the period between 1954 and 1963, hardly any significant statutory changes occurred in the tax.
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