Originally Posted by frannieandejsmom
can you explain more about dumont-willis... our tester used them as well and I dont get it smile

thanks

The Dumont-Willis tables (they are freely available on the internet, btw: http://alpha.fdu.edu/psychology/WISCIV_DWI.htm) are conceptually the same as the GAI (for the DW-index-1), and the CPI (for the DW-index-2), but, not having access to the actual WISC-IV standardization data, they used mathematical manipulations of published statistical info to generate them. That's why I use the actual WISC-IV GAI tables instead of the DW-1. There aren't easily accessible WISC-IV CPI tables (although there will be on the eagerly-awaited WISC-V), so, if I want that info, I turn to the DW-2. The discussion upthread about GAI and CPI applies in its entirety to the Dumont-Willis indices. (Frank and myself both posted contributions.)

...pronounced like the long vowel and first letter of the alphabet...