Social experiments are powerful sources of information about the effectiveness of interventions. In practice, initial randomization plans are almost always compromised. Multiple hypotheses are frequently tested. "Significant" effects are often reported with p-values that do not account for...

The freedom of citizens to form voluntary associations has long been viewed as an essential ingredient of modern civil society. Our chapter revises the standard Tocquevillian account of associational freedom in the early United States by accentuating the role of state courts and legislatures in...

We study how the organization of the state evolves over the process of development of a nation, using a new dataset on the internal organization of the U.S. federal bureaucracy over 1817-1905. First, we show a series of facts, describing how the size of the state, its presence across the...