Have you asked the psychologist why she is considering using the RIAS?
My AS son, who has visual and motor disabilities, was tested on the RIAS to minimize the impact of his disabilities on the assessment process, since it does not have a motor output requirement and does not require the same level of visual discrimination that some of the other tests do. His verbal intelligence scores on the SB-IV and the RIAS were comparable (99.9th percentile); his verbal score on the WISC-IV was lower (99th percentile) due to low scores on the comprehension subtest, a common problem with AS. His non-verbal intelligence score on the RIAS was much higher than on the SB-IV and the WISC-IV, and more consistent with what we see in his day-to-day functioning, because the visual reasoning items were in a format that was less crowded and easier to see, and there was no motor output required. The RIAS measured his non-verbal reasoning, not his disabilities. The psychologist who tested my son with the RIAS chose it specifically for this reason.
