> There are two primary threats to the validity of our interpretation of the results above. [...] A second possibility is that young people’s responses are reflecting social desirability bias; that they are providing responses that they believe will be viewed as positively by others (e.g. that they know various mathematics concepts, that they work hard at school etc). Both of these possibilities could lead to a spurious correlation between our bullshit index and the various other psychological traits investigated in the previous sub-section.
Huh?? What on earth does "bullshit" mean if not, y'know, giving socially-desirable answers rather than correct ones? (I mean, that's basically roughly how Frankfurt defined it.) Social desirability bias isn't a separate thing interfering with your measurement of bullshit; social desirability bias is bullshit (or rather, a cause of it).
I am quite confused as to how the authors are conceptualizing "bullshit" if their notion of it apparently excludes social desirability bias as a separate thing. That seems to me to be quite different from what anyone else means. I think some explanation is really required here.