Gifted Issues Discussion homepage Forums Identification, Testing & Assessment Questions and doubts about giftedness

You know, come to think of it, researching mental retardation and IQ scores is what led me to this board in the first place.

I am far from an expert, but from what I understand the curve between 130 and 70 behaved pretty much the same way as it does today but the top tail was somewhat different, no idea about the bottom tail...

So, assuming my understanding is correct, 130 on the SLBM, if you were 8 when it was a current test should be similar to 130 on a current test if you are 8 now, but 145 maps to a much higher number back then, and I don't fully understand how.

SB-5 (composite) to SB-LM score conversion: 0.932Sum + 34.8 (for high scores).

For non-verbal SB-5: 1.596Sum + 36.2.

https://m.facebook.com/story.php?st...168217142239&_ft_=fbid.10151423244707240


See table 7: only 23 cases (and only high scores).

1)
Gifted Composite
NFR + NKN + NQR + VFR + VKN + VQR + VVS
Reliability: 0.97
Conversion Equation: 0.932Sum + 34.8

2)
Nonverbal Gifted
NFR + NKN + NQR + NVS
Reliability: 0.95
Conversion Equation: 1.596Sum + 36.2

According to the above (except there is no data above for the low scores):
SB-5: 70 85 100 115 130 145
map to
SB-LM: 100 114 128 142 156 170.

Thanks!

That PDF is useful, but its also worth noting that some would argue that the SLBM was already problematic by the time the Sb5 was coming out. 180 on the SLBM when the sb5 was being norms was probably more common than 180 on the SLBM when it was new... Norming over time and across various tests is a messy business...

I think renorming is the problem, it forces apple to oranges scenarios and undermines longitudinal study results and measures of intervention success, etc. Then like if someone says when I was a kid we learned this way, then you can say well half your class had an IQ under 100, nowadays, half the kids have an IQ over 115, picking numbers out of the air.

Thank you all for the insight and book suggestions, I will definitely look into getting some of the books. DS loves science too. We subscribe to BrainPoP and he can sit and watch movies after movies on science topics, and sometimes math.

I apologize for writing WISC-III instead of WISC-IV. I think I was thinking of WIAT-III when I typed that. DS took WISC-IV.

Can someone give me a brief description on what happen after you are accepted by DYS. Does it mean that you can contact them with questions? Do they give suggestions on curriculum? We have this forum with wonderful parents who has a lot of experience with gifted kids and are so kindly helping other parents. I'm just trying to decide whether it's better to seek advice here or make the investment to do another achievement test. I have a feeling that his score will be better this time around.

Thank you for all of your input on this matter. I will definitely check out the books that was suggested. Thank you arlen1.

I am sorry for the confusion on the IQ test. He took WISC-IV not III, I must have been thinking WIAT-III when I typed that.

Does anybody know, in WIAT, whether total math is the combination of mathematics and math fluency, or just mathematics? His math was 155, but his math fluency was 107. At the time of test, DS was able to figure things out how to calculate things, but we never really work on fluency, not until the school required him to. I'm still trying to decide whether to have DS take another test or not.