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Best IQ test for the twice exceptional child


Mama-llama May 17, 2008

Hi all -- I am trying to get my child placed in a GT class -- the traditional classroom does not work well for her -- and am wondering which of the IQ tests best reflect the intelligence of a twice exceptional child. 

We had the WISC-IV done a few years back, which showed high perceptual reasoning but extremely low processing, which weighed her overall IQ down a great deal.

Her dyslexia has been successfully remediated, but the speed is still a big issue for her.  The tests that our school district administers to measure giftedness are timed, and she just missed the cutoff on those.

If anyone has any recommendations or links to a website, I would most appreciate it! Thank you!


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momvic May 17, 2008

If you don't mind me asking, what program did your school use to help remediate her dyslexia? We are still working on my son's IEP.


Mama-llama May 17, 2008

My school did nothing -- my daughter's grades and test scores were too high -- so I tutored her myself for the last three years using Barton. We just finished that up a few months ago. She is is now ten years old, an excellent reader and a very good speller -- her only obvious issue now is her speed and I don't know think there is anything that helps with that.


momvic May 17, 2008

My son is 10. My 1st level of Barton is on it's way to me in the mail. He is reading at a grade level 3. His goal on his IEP is at the end of a grade 4 for 5th grade.

My son did the SRA reading all this year in school and his reading speed has increased. He did the level 1b decoding. He now has a hard time spelling and writing at a speed that he thinks. It has improved this year, I am hoping that if we use Barton, maybe we will see a bigger difference.


michellea May 18, 2008

The WISC has a measure called the GAI (General Ability Index) that is based on the PRI and VCI only. Typically processing speed and or working memory are the two indices that weigh down the overall IQ scores of people with disabilties. Here is an article:

You might want to check out the twice exceptional group if you havn't already.

Hope this helps!


Snowflake June 2, 2008

Hi, Mama-llama,
I wish I knew. I don't know if any test can do that yet, and it's pretty difficult to find anyone who can give an accurate assessment. There is some information about it on the Gifted Developmental Center site:

You might also want to ask the question in the Twice Exceptional Group here. Schools and gifted programs do have the means of allowing students that they determine as gifted in general or in certain areas to participate in classes or outside programs by other means than IQ or standardized test scores, although the beaurocracy around that can be difficult even for the programs themselves. So you may need support of the school for this. I believe that teachers can also recommend students for gifted classes. Perhaps since we don't actually have a TAG budget to support the classes (it's from the school budget) no children who have the need to take enrichment classes should be excluded. I don't think any kids who have the need and ability to take enrichment classes should be judged, limited or excluded in any case...especially if they are twice exceptioanl, and need to be involved in the subjects where they have strong abilities, or potential, and could excel.


Mama-llama June 5, 2008

Thanks for the replies and the links everyone!


bwmomma June 19, 2008

Here is a site provided from the GS 2e site:
healthy11 April 26, 2008
Re: How is gifted defined?
I think this presentation may address the questions you've asked:

Check it out as it defines the various methods of determining giftedness. Since the change from WISC-III to the WISC-IV test several years ago the use of the GAI (general ability index)is calculated(when the full scale IQ score is uninterpretable due to extreme discrepancies btw index scores) by using the VCI and PRI when the scores of the subtests in working memory or processing speed have a disparity of greater than 23 pts.

your school may need to acknowledge her giftedness under the GAI measure not by speed or full scale IQ scores.
My dd is 2e - challenged by slow processing speed and dyslexia. She too has been successfully remediated for her dyslexia but the processing speed has left us to provide changes in test taking, work load, scribing. She excels in her classwork as she is allowed to have the time required to prove her abilities. Her giftedness has been an incredible asset that her school has chosen to recognize - even with the lack of speed.

It was actually the large discrepency btw indexes that got her the immediate support she needed to remediate her dyslexia w/mutlisensory reading instruction during the school day. Your dd's scores may reflect the need to provide her with the support necessary to meet her giftedness as well as her challenges.


Mama-llama June 21, 2008

Thanks bwmomma. That link was very useful. Congratulations on remediating your daughter's dyslexia and getting her giftedness recognized by the school.

Do you by chance know what full scale IQ is generally accepted as the cut-off to be considered gifted?


thisbattymom August 11, 2009

I have been told that the overall baseline for "Gifted" IQ scores were 130. I really don't have a clue how or if there is anything you can do to alter your child's involvement in the program.
Good luck.


Palome September 9, 2009

I would recommend the iq test at

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