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Correlation Between Tests

By Inderbir Kaur Sandhu, Ph.D


Q: My son (age 6 yrs 4 mths) just took the WJIII. Based on his scores (Broad Math >99.9 - SS 151 and Broad Reading 99.7 SS 142) it was suggested he test for admission to the highly gifted program in our district. He now has to sit for the Stanford Binet V and WIAT II. While I know the tests measure different things - I was just curious...what is the correlation between the three tests?

We originally had him take the WJIII just to see how well his non traditional private school was preparing him - so the results are somewhat surprising to us. But now - we are just wondering if based on his WJIII results should we expect to see positive results on the two tests he now has to sit for? He's a great test taker....doesn't get test anxiety issues.

A: You are right to acknowledge the fact that these tests have varying focus. However, it is found that the reading subtests of the Woodcock Johnson Third Edition (WJIII) and the Wechsler Individual Achievement Test Second Edition (WIAT II) is highly correlated. Therefore, it can be assumed that one test may be able to predict another. The Stanford Binet V (SB V) and WJIII also appears to be significantly correlated.

It is known that the WISC-IV and the SB V are the two most widely used intelligence tests and are usually used along with the WJ-III Tests of Achievement to help make placement decisions within the school system. Therefore, the WJIII is a test that is valued well with these other tests.

I don't think there is anything to be concerned about since your son has done very well for the WJIII test. Since he is a great test taker, it would be helpful as well as children do tend to get rather anxious and it does an effect on the scores at times. I believe you can expect to see some positive results on the tests but if you don't, do check with the tester or an educational psychologist to determine the areas that brought down the scores. Good luck!


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