An IQ Score of 90 is Dull Normal Intelligence

The Wechsler Intelligence Scale classifies an IQ Score of 90 as dull normal intelligence. If your child scored 90 on an IQ test there are many factors which may have contributed to his/her low IQ score such as: a learning disability, dyslexia or Attention Deficit Disorder (ADD). To help rule out learning disabilities, we suggest that your child take the Spatial ISIQ Childrens IQ Test. This test is recommended for children ages 6 – 16.

Intended Use: The Spatial ISIQ Childrens IQ Test is intended as a test that parents of young children and teenagers can use over the Internet for measuring spatial intelligence. Scores obtained can help persons with self-awareness, self-understanding and making plans for schooling and/or career choices. Reports can be used by professionals as well, as in assessing for career planning, school placement and problem diagnosis. For example, when diagnosing ADHD, learning disabilities and dyslexia, it is important to rule out behavior disorders.

If your child takes the test and scores between 80 - 90 there is a chance that your child has a learning disorder. Furthermore, you should consult with a school counselor about obtaining a proper diagnosis, (that is if it is during a school year) or you should seek consultation from an experienced licensed clinical psychologist. Moreover, you will be provided with a detailed analysis obtained from taking the Spatial ISIQ Childrens IQ Test which you can present to a counselor or a clinical psychologist should you seek professional help.

Over 99 percent of online IQ tests are created by non-licensed psychologists or clinicians, and therefore should not be taken seriously or should not be taken at all! Scores obtained from these so-called IQ tests are often erroneous and/or superficial. In light of this knowledge, you can trust that The Spatial ISIQ Childrens IQ Test was created by William A. McConochie, Ph.D who is a practicing psychologist who has authored several diagnostic tests and has specialized in test development and diagnostic evaluations from 1986 - present.

More about Dr. William A. McConochie


  • B.A., Psychology, 1961, Carleton College, Northfield, Minn.
  • M.S. School psychology, 1968, Illinois Institute of Technology, Chicago.
  • Ph.D. Counseling Psychology, 1970, Illinois Institute of Technology
  • Post-doctoral clinical internship, Northwestern U., Medical School, Chicago, 1971

The Spatial ISIQ Childrens IQ Test is not a free IQ test. However, it is affordably priced at $19.97. To take the test and find out more information regarding the Spatial ISIQ Childrens IQ Test, please click on the Spatial ISIQ Childrens IQ Test link.

IQ Conversion Table

The table below demonstrates a cross reference of your IQ score. For example, an IQ score of 90 received by taking the Standford-Binet can be cross referenced to measure the same score in the Cattell Intelligence Test and the Wechsler Intelligence Tests. GRE and SAT scores can also be converted from an IQ score of 90. Finally, the IQ table gives you the rarity and percentile of your IQ score and it also demonstrates how your IQ score ranks against the general population.

IQ Score of 90
IQ Calculation
Standard Deviation
An IQ Score of 90 is Higher Than
25.2% of the General Population
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