"Walls" Replication Page

Below are files for replicating or extending results in the paper ``Why Do States Build Walls?'' (w/ David Carter). Given the number of inquires we have received regarding our wall data, I created this webpage to help future scholarship.

These Stata data files and do file reproduce Table 3 (our main results) with updated wall data:

We also receive a lot of questions about the process used to create our wall data. We don't claim to have the definitive list of walls, but we think others will find it useful to know the procedure will followed ot create the list.

We definitely recommend that you check out the walls replication data on my "original data" page.

Here are details on exactly how we collected the data.

We first reached out to Brent Sterling (author of this excellent book) because his book suggests the existence of a larger set of walls (though the book itself focused on a few key cases). He was very helpful. He provided a short list and then directed us to the list from the Global Security Organization. That served as the core of our list. Once we created our "core list", we then turned to Lexis-Nexus, news papers, and Wikipedia (which actually has a nice list of "Separation Barriers"). The zip folder you will download from the link on the "original data" page contains information regarding the sources of the walls (Column H).

If you have any questions, please do not hesitate to contact me.

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