Economists and economic historians want to know how much better life is today than in the past. Fifty years ago economic historians found surprisingly small gains from 19th century US railroads, while more recently economists have found relatively large gains from electricity, computers and cell...

New inventions are good for economic growth, but equally important are improvements in the way we make things - what's known as process innovation. Tim Leunig and Joachim Voth measure the impact of two such innovations - mechanical cotton spinning and the motorcar assembly line - on the world's...

Economists and economic historians want to know how much better life is today than in the past. Fifty years ago economic historians found surprisingly small gains from 19th century US railroads, while more recently economists have found relatively large gains from electricity, computers and cell...

Oxley finds that smallpox consistently reduced heights, but that the fall was not statistically significant outside London or for juvenile Londoners. We demonstrate that inappropriate subdivision of the data into small samples explains the lack of significance she obtains. Further analysis of...

In this paper, we re-examine the effect of smallpox on the height attained by those who suffered from this disease. To this end, we analyse a dataset assembled by Floud, Wachter and Gregory on the height of recruits into the Marine Society, 1770-1873. Using both time series and cross-sectional...

Razzell argues that the quality of smallpox recording in the Marine Society data set is so poor that ‘the impact of smallpox on average height cannot be settled by analysis of the Marine Society data set’. We believe that this grossly overstates the problems of the records, and is based on a...

Between them our critics span the entire range of this Journal’s readership. On the one hand Razzell accuses us of ‘the abandonment of traditional scholarly procedures’. He argues that our plight ‘will provide a salutary lesson for the new economic history. No amount of sophisticated...