This paper examines the evolution of productivity in U.S. manufacturing plants from 1963 to 1992. We define a "vintage effect" as the change in productivity of recent cohorts of new plants relative to earlier cohorts of new plants, and a "survival effect" as the change in productivity of a...

This paper examines the empirical implications of aggregation bias when measuring the productive impact of computers. To isolate two specific aggregation problems relating to "aggregation in variables" and "aggregation in relations," we compare various production function estimates across a...

In recent years, U.S. productivity growth accelerated sharply in manufacturing, but has remained sluggish in the most computer-intensive service industries. This paper explores the possibility that information technology is generating output that is increasingly hard to measure in...