Showing papers by "Edward Nissan published in 1998"

Effects of antitrust enforcement on aggregate concentration

Abstract: Four indexes are employed to measure trends in asset concentration of large business in the United States between 1967 and 1992 using the Fortune 500 data. The paper also investigates whether the merger wave of the 1980s was statistically significant. For all the 500 and the top 100 firms, each of the indexes confirmed that concentration trends were on the increase for the whole period and that the increase in the level of concentration due to the mergers of the 1980s was statistically significant. However, on both counts, not all indexes were in agreement for the bottom 300 firms when examined by subsets of 100 firms.

Convergence of black household income in largest u.s. cities.

Abstract: This paper investigates the widening (divergence) or narrowing (convergence) of black income as well as black income proportionate to all income using median family income over the 1980s. Analysis is undertaken at the regional level using the coefficient of variation and analysis of variance, and at the city level using a linear model. The linear model, in addition to providing a measure for divergence or convergence, provides a measure of residual change which distinguishes city performance above or below expectation. At the regional level, the general result is divergence of black income born 1979 to 1989, while at the city level, the general results were divergence for black income, but a convergence in black income proportionate to all income.