Many people wonder whether a nonverbal autistic person can have average or even high intelligence. The truth is, IQ does not depend on speech. Being nonverbal simply means a person does not use spoken language—it does not mean they lack intelligence.
Traditional IQ tests often rely on verbal skills, which can underestimate the true cognitive abilities of nonverbal individuals. Thankfully, there are nonverbal IQ tests, such as the Leiter International Performance Scale or Raven’s Progressive Matrices, that provide a more accurate picture.
Some nonverbal autistic individuals have intellectual disabilities, but many do not. Some show strengths in memory, pattern recognition, or visual thinking. Others may communicate using assistive devices, sign language, or other nonverbal methods.
At Bluebell ABA, we believe every child has potential, regardless of how they communicate. We focus on identifying strengths, building skills, and supporting each individual’s unique learning style. With the right tools and support, nonverbal children can thrive academically, socially, and emotionally.
Don’t let speech define ability—intelligence comes in many forms, and every child deserves the chance to shine.
Frequently Asked Questions
1. Can a nonverbal autistic person have a high IQ?
Yes. Many have average or above-average intelligence.
2. Does being nonverbal mean low intelligence?
No, speech ability and intelligence are not the same.
3. How is IQ measured without speech?
With nonverbal IQ tests like the Leiter or Raven’s Matrices.
Sources:
https://www.healthline.com/health/autism/nonverbal-autism
https://pmc.ncbi.nlm.nih.gov/articles/PMC4876598/
https://psycnet.apa.org/record/2003-88063-011
https://www.txautism.net/evaluations/leiter-international-performance-scale-third-edition