Feeding the world's growing population is one of the most critical policy challenges for the 21st century. With tightening constraints on water, arable land, and other natural resources, agricultural innovation is quickly becoming the most promising path meet the nutrient needs for future...

A significant challenge to empirically testing theories of discrimination has been the difficulty of identifying taste-based discrimination and of distinguishing it clearly from statistical discrimination. This paper addresses this problem through a two-part empirical test of taste-based...

This paper argues that the ability to keep innovations secret may be a key determinant of patenting. To test this hypothesis, the paper examines a newly-collected data set of more than 7,000 American and British innovations at four world's fairs between 1851 and 1915. Exhibition data show that...

This paper introduces a new internationally comparable data set that permits an empirical investigation of the effects of patent law on innovation. The data have been constructed from the catalogues of two 19th century world fairs: the Crystal Palace Exhibition in London, 1851, and the...

A strong tradition in economic history, which primarily relies on qualitative evidence and statistical correlations, has emphasized the importance of patents as a primary driver of innovation. Recent improvements in empirical methodology - through the creation of new data sets and advances in...

What is the optimal system of intellectual property rights to encourage innovation? Empirical evidence from economic history can help to inform important policy questions that have been difficult to answer with modern data: 1) Does the existence of strong patent laws encourage innovation? And 2)...

This paper exploits exogenous variation in the adoption of copyrights - as a result of the timing of Napoléon's military victories in Italy - to examine the effects of copyrights on creativity. To measure changes in creative output we compare changes in the creation of new operas across states...

How does a person's childhood socioeconomic status (SES) influence their chances to participate and succeed in science? To investigate this question, we use machine-learning methods to link scientists in a comprehensive biographical dictionary, the American Men of Science (1921), with their...

This article exploits a differential increase in copyright under the UK Copyright Act of 1814 - in favor of books by dead authors - to examine the influence of longer copyrights on price. Difference-in-differences analyses, which compare changes in the price of books by dead and living authors,...

Patents are the main source of data on innovation, but there are persistent concerns that patents may be a noisy and biased measure. An important challenge arises from unobservable variation in the size of the inventive step that is covered by a patent. The count of later patents that cite a...