The share of merchandise output that is internationally traded has significantly increased while tariffs have fallen. However, standard trade models have surprising difficulty linking these two facts. Trade growth slowed in the 1970s as tariffs fell relatively sharply while after the late 1980s...

The Excel spreadsheet contains the data used in Figure 2 as well as the calibration exercice.

Despite the pervasiveness of industry regulation, there are few studies of its impact on industry productivity. Assessing regulation's impact on productivity has been difficult for a number of reasons, including the complexity of regulations and the difficulty measuring productivity. We study an...

The Atlas Narodov Mira has been used extensively to investigate the effects of ethnic divisions, but little is known about how it defines ethnicity. Most theories of ethnicity emphasize the tendency of group members to marry within the group (endogamy). This note surveys studies of ethnic...