I don't like this too much. There are some questions that do seem to get to some sort of ability, but many others are achievement based. For example, writing the names of friends or address.
I think it is too short and it doesn't really give you a good idea. I did not finish it, but read through it thinking of my 4.5 year old. She tested HG++ verbally on WPPSI-III. I think her score on the WPPSI would not line up at all with that instrument.
I do think that perhaps you can use it for delay in terms of what a typical child could/should be doing at a certain age.
It is good, in my point of view, to understand what normal development looks like, and for instance realize what of the things your dd is doing are typical for what age; but guessing an IQ from that, I do not think would be even close enough.
