Critique of Palmer et al. (2008)

I have posted a critique of Palmer et al. (2008) over at LB/RB. The paper claims to associate autism with coal-fired power-plant emissions, particularly mercury. I argue that the control for urbanicity in the paper is limited. Then I illustrate how it is that population density mediates the correlation in California.

I prefer that comments be made over at the LB/RB post.