Hi, new here, probably in wrong place, I'm totally baffled by the WISC-IV composite results my son (12) recently got from a private tester: a full scale IQ came up as psychometrically invalid because of the 4 standard deviation scatter between the VCI (144) and the PSI (88)... I had him privately re-tested because of some problems that were cropping up lately

so, MindyLu, a private test might be in order to find out if there is a specific area of ability/weakness