I found a chart of average scaled scores in WISC-IV for children with Asperger syndrome, NVLD and some other developmental disorders. Two first subscales on the chart were Block Design and Similarities. Average score in Block Design in ASP group was about 11 and in NVLD group it was about 7,5. Average score in Similarities in ASP group was a bit above 12 and in NVLD group it was about 11,5. Block Design subscale is in Perceptual Reasoning Index (PRI) and PIQ and Similarities subscale is in Verbal Comprehension Index (VCI) and VIQ. I did not WISC-IV, but WAIS-R and I scored 14 in Block Design and 13 in Similarities, if I remember it well. It looks bizarre that my POI (counterpart of PRI) was 25 points lower than VCI and that I think that I have just NVLD, not ASP/ASD or comorbidity of ASP/ASD and NVLD despite minimally higher Block Design than Similarities on my WAIS-R done when I was about 24,5 years old in 2016. I received diagnoses of Asperger syndrome, OCD and schizotypal disorder when I left day hospital on which I had WAIS-R test with a psychologist.