what I would like you to do is to go to the Wikipedia site for Benjamin Drake Wright. Of course you know that this is the man who worked with Georg Rasch and pioneered Rasch. And naturally this is why we name the Wright Map the Wright Map.
Dr. Wright was my advisor at the University of Chicago. And it is from him that I learned how to measure with Rasch.
So for your memo this weekjust look over Bens WWW and send me a page of your thoughts!