This paper introduces new data on state-level physical capital by sector and land in the farm sector for the states of the United States from 1840 to 2000. These data are incorporated into aggregate accounting exercises, with the aim of comparing cross-state results to those found in...

This paper introduces new estimates of physical capital and land for the states of the United States covering up to 150 years, from 1850{2000. The estimates of physical capital are decomposed into estimates for agriculture, manufacturing, and a residual sector, while the estimates of land are...

This paper presents new estimates of the benets of equal education opportunity for blacks over the period 1820-2000. For the better part of US history, blacks have enjoyed less access to schooling for their children than whites. This paper attempts to quantify the value of this discrimination....

We present new data on real output per worker, schooling per worker, human capital per worker, real physical capital per worker for 168 countries. The output data represent all available data from Maddison. The physical capital data represent all available data from Mitchell. One major...

This extended data appendix describes the sources and methods used to construct the data used in our paper "Economic Growth in the Long Run."

We present a model capable of explaining 200 years of declining fertility, 200 years of rising educational achievement and a significant Baby Boom for the United States and twenty other industrialized market countries. We highlight the importance of secularly declining young adult mortality risk...

Children born to unmarried parents may receive lower human capital investments in youth, leading to higher levels of criminal activity as adults. Therefore, unmarried fertility may be positively associated with future crime. On the other hand, in an environment in which social stigma attached to...

Research aimed at understanding cross-country income differences finds that inputs of human and physical capital play a limited role in explaining those differences. However, most of this work assumes workers with different education levels are perfect substitutes. Does moving away from this...

We present a general equilibrium dynamic model that characterizes the gap between optimal and equilibrium fertility and investment in human capital. In the model, the aggregate production function exhibits increasing returns to population arising from specialization but households face the...

We present new data on real output per worker, schooling per worker, human capital per worker, real physical capital per worker for 168 countries. The output data represent all available data from Maddison. The physical capital data represent all available data from Mitchell. One major...