It is complicated by the fact that the older tests scored higher and people are used to thinking of an IQ of 180+ being PG (a lot of the papers available use results from wisc111, wppsiR etc. You know 158, well it's not 180 is it though. Well no but the test doesn't go that high and it is >99.9 percentile by a fair amount. I have been having problems accepting it myself.