This study examines the role of sheepskin effects in explaining white-black earnings differences. The study finds significant differences in sheepskin effects between white men and black men, with white men receiving higher rewards for lower level signals (degrees of a college education or less)...

This study analyzes the effects of an important postderegulation innovation on rail freight productivity: the elimination of cabooses and related crew members. It also analyzes the overall growth of productivity in rail freight between 1983 and 1997 (using a translog rail cost function estimated...

This study examines the earnings and characteristics of low to mid-level managers in the airline, trucking, and railroad industries and changes since deregulation. Moreover, the study examines the hypotheses that managerial quality has improved and that there is a stronger pay for performance...

This study estimates a hedonic railroad cost function. It allows for differences in marginal costs across different outputs with different shipment characteristics. Cost and shipment data are included to examine the elasticity of costs with respect to two outputs - unit train output and way &...

This study examines the cost implications of competition over existing US freight rail lines by testing for the condition of cost subadditivity. The study finds: (1) that there are economies associated with vertically integrated roadway maintenance and transport, suggesting that separating the...

This study examines airfares for flights serving small and large communities, and attempts to explain their differences using a 10 per cent sample of all tickets sold nationwide in the year prior to the terrorist attacks of 11 September 2001. The study finds airfares that are 11 per cent higher...