To answer a couple of questions that came up on this thread, as I know this literature very well...
-Why these wierd, spread eagled pictures of women and why only women?
The images come from an older study into the way women with eating disorders look at the female body (what interests them vs a 'healthy' viewer, how do they judge attractiveness etc). They are women (with EDs as I recall) of known BMI and body proportions and the images have been used over and over and there's a lot of good comparative data on them. There is no male data set which would allow study of perceptions of men nearly as well. However, this annoys me too and since I'm currently writing a grant to do some related work I shall put that in and get money to create a data set. If I can persuade men to come in and be photographed in white CKs...!
Oh and faces are obscured for the obvious reason of controlling what's driving perceptions. Faces are very influential in attraction. (And we know a lot more about women's preferences for men's faces!).
-" Not sure why they're using the BMI of the women when this has been pretty conclusively challenged. "
In terms of adult health, sure percentage body fat is more important. But those measures don't exist for these women and there's lots of data showing that BMI is an important predictor of attraction.
- "Why not - why do white men like skinny women? "
That kind of is what this is about. Once anthropologists pointed out that western body preferences weren't the same as non-Western preferences, especially on weight for certain groups, the question became what's driving the differences and why would we in the West come to culture revere an apparently unhealthy ideal.
I don't know how well Newcastle involve their academics when creating press releases, but I've had the folks at my institution say "No, you can't add in that explanation, it'll get ignored." And then you can't control what the journos write either.