i heard also that they tend to go up due to the fact that its hard to get optimal testing conditions at a young age. So low scores can be explained by external factors. however high scores are not really possible to get "by chance" since its not multiple choice, so these scores might have more validity.. However i've also heard that WPPSI scores are a bit inflated compared to WISC.. and Dr. Ruf chimed in on our board a while back when i asked if a 147 on the WPPSi was really comparable to a 147 on the WISC and she basically said it was not. Though percentile-wise they are the same so that is confusing to me. I'll try to find her post and re-read , but that was the feeling i got from it.
irene
