Different IQ Score
By Inderbir Kaur Sandhu, Ph.D
My child has achievement score higher than the IQ score.
She is classified mentally disabled due to her IQ score.
The achievement for Wechsler were: composite scale math 74,
written language 89, oral language 88. The Kaufman
Assessment Battery achievement composite was 76 (on the brief form it
Her IQ score was lower: verbal 66, performance 68 and full
scale of 64 for Wechsler. Is this a significant discrepancy?
I think she may have dyslexia. Is that possible?
A: It would not be fair to
assume anything without seeing the full report. Different
tests may indicate different scores and these scores should
not be compared with one another as they may test different
abilities. The Kaufman Assessment Battery for Children is a
standardized test that assesses intelligence and achievement
in children. It was developed to evaluate preschoolers,
minority groups, and children with learning disabilities and
especially useful in providing information about nonverbal
intellectual abilities. The results provide an estimate of
the level at which a child is functioning based on a
combination of many different subtests or measures of
skills. This test gives both achievement and intelligence
The Wechsler IQ scales are used as tools in school
placement, in determining the presence of a learning
disability or a developmental delay, in identifying
giftedness, and in tracking intellectual development.
In your daughter's case, the full report must be seen to
determine any learning disability. Only a trained
psychologist will be able to evaluate and interpret the
results, determine strengths and weaknesses, and make
overall recommendations based on the findings and behavioral
observations. Therefore, it would be best to see a good
psychologist in testing for a fair interpretation.