I'm always surprised by how prevalent this personality test seems to be in the US. I had never heard of it before arriving here and it seems that almost everybo

I'm always surprised by how prevalent this personality test seems to be in the US. I had never heard of it before arriving here and it seems that almost everybody took it at some point in their lives. A friend of mine said he had heard of it in France (where I'm from), but it's clearly not common. Is it an American thing?