Oops, upon reading more about the SQ, I should correct myself:
Some of the items, such as S16, are “filler items” which are not counted as part of the score; these are disproportionately part of the “Social difficulties” and “Jockyness” factors, so that probably reduces the amount of bias that can be introduced by those items, and it also also explains why they don’t correlate very much with the overall SQ scores.
But some of the items for these factors, such as S31, are not filler items, and instead get counted for the test, presumably because they have cross-loadings on the Systematizing factor. So the induced bias is probably not zero.
If I get the data from OpenPsychometrics, I will investigate in more detail.
Oops, upon reading more about the SQ, I should correct myself:
Some of the items, such as S16, are “filler items” which are not counted as part of the score; these are disproportionately part of the “Social difficulties” and “Jockyness” factors, so that probably reduces the amount of bias that can be introduced by those items, and it also also explains why they don’t correlate very much with the overall SQ scores.
But some of the items for these factors, such as S31, are not filler items, and instead get counted for the test, presumably because they have cross-loadings on the Systematizing factor. So the induced bias is probably not zero.
If I get the data from OpenPsychometrics, I will investigate in more detail.