Thanks for the reply. Regarding your post:
>Bob
>
>The answer to question is 1. providing element & construct loadings have
>been scaled in the same metric (always hard to prove). However you may want
>to break it up by also plotting the means (which will have almost certainly
>been conditioned out in the principal compoenents) as an orthogonal axis,
>which would be strictly analagous to plotting testitems by discrimination
>and difficulty
I'm lost. Do you mean that plotting the element and construct means along a
line/axis? What would this axis be orthogonal to, the element-construct axis?
Regards,
Bob
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%