"How many zombies do you know?" Using indirect survey methods to measure alien attacks and outbreaks of the undead [Applied Statistics]

I've been told that it's zombie day, so I thought I'd link to this research article by Gelman and Romero:

The zombie menace has so far been studied only qualitatively or through the use of mathematical models without empirical content. We propose to use a new tool in survey research to allow zombies to be studied indirectly without risk to the interviewers.

It's on Arxiv, so you know it's real.

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