Is an IQ score of zero possible?

If a person is able to follow instructions well enough to take a test, he or she has some level of intelligence and therefore an IQ score higher than zero.  Why then is the range of IQ scores given as 0 or higher?  

1 Answer

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  • Stella
    Lv 7
    2 months ago

    A person with a severe intellectual disability is not going to be able to take a test like that.

    However, there are other ways to estimate their IQ, based on how well they function. Can they ask for things, even just by pointing at it?

    Can they assemble a simple puzzle?

    Do they have any understanding of cause and effect?

    Can they feed themselves?

    Dress themselves?

    Do they respond to visual or auditory stimuli?

    Etc.

    A person would have to be virtually brain dead to have a zero score.

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