Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Wisc versus sb5

Hello,
My son was tested privately (sb5) and by the school (wisc iv). The results seem much more spread on the wisc (although the school psych said that he was distracted in some tests).
I am wondering whether any one ad any thoughts on the differences between the results. Also I am wondering whether I have calculated the gai correctly ( 147 ) and whether it is appropriate for him and should I be worried about the wm etc given thy didn't seem so low on sb5.

Sb5
Nonverbal Tests Scaled score (1-19) Verbal Tests Scaled score (1-19)
Fluid Reasoning (routing) 15 Fluid Reasoning 17*
Knowledge 19* Knowledge (routing) 16*
Quantitative Reasoning 14 Quantitative Reasoning 15
Visual-Spatial Processing 13 Visual-Spatial Processing 16*
Working Memory 14 Working Memory 14
NVFR (matrices ss15)
Verbal Knowledge (vocab ss 16).

Wisc
His results were:
Verbal comp:
similarities 19
vocabulary 19
comprehension 16
perceptual reasoning
block design 15
picture concepts 14
picture completion 14
(comment that he had trouble concentrating here due to returning after lunch)
working memory
digit span 11
letter-number sequence 15
Processing speed
coding 11
symbol search 12
The calculations are:
vci 99.9
pri 96
wmi 86
processing speed index 73
full scale score 99

I would appreciate any thoughts.
Hhbella

I would say they seem more scattered because there is no processing speed component in the SB5 and that was his weakest area in the WISC, his WM was a little uneven in the WISC too, with one lower score. The WM tests work differently on the SB5 and are "gentler" for some kids. He's got a clear strength in the verbal on both tests. Looks to me like the SB5 was maybe hiding some weaker areas but not necessarily showing his strengths that well either?