Temp post for NASP thread: Evaluating significance of subtest difference scores

There is a hot thread on the NASP listserv this morning where I am making a reply that references some tables/slides. I am posting them here so people can view them. I also am making reference to a classic 1957 article by Payne and Jones for which I am providing a link here.

I have been trying to find time to work this material into a formal IAP 101 Brief or Report....but simply can't find the time. Maybe this will get that going.

Sorry if this post doesn't make sense "as is".....I hope to cycle back later to write a more complete explanation.

Double click on images to enlarge.









- iPost using BlogPress from my Kevin McGrew's iPad