In the family of my maternal grandfather there are many individuals who are much better at science but have difficulty with language (often in combination with dyslexia) in school. I have some evidence that those individuals (myself included) have a significant higher non-verbal IQ (20 to 30 points) than verbal IQ as categorized by the WISC-V intelligence tests. I often struggle to express my ideas with words. When I think about algorithms it is often in 'abstract' visual images. While developing software, I find myself searching for functions/methods a lot, because I often forget their names or the order of the parameters.

Academic performance is strongly correlated with the verbal components of intelligence. I wonder if there are other people who know that their non-verbal IQ is measurable higher than their verbal IQ.