That said, excluding multi-location employers from a minimum wage study just seems to me to be so obviously flawed as to border on pure dishonesty.
I'm truly curious how things like this happen. Did UW publish this as a reasonable study with limited findings only to find the press massively misreported it? Or did the desire for media coverage lead the researchers to overstate the findings just to get in the press? I personally don't think political bias drove this. It looks like researchers at UW made a perfectly reasonable small limited study that added a small amount to our knowledge, but then either the researchers or the university or the press advertised it as an exhaustive answer to a complex question.