The WISC measures auditory short term memory. My younger dd had a profile like you describe your son's. On the WISC, her processing speed and working memory were avg, but the verbal and perceptual subtests were nearly at the ceiling of the test. For her, b/c her other two were so high, her FSIQ still came out at 130 even with the two lower scores figured in and the GAI was in the upper 140s. She's taking the SB5 as part of a new assessment, although she was sick when she took it (headache/woozy, stuffy nose, etc.), so I'm not sure how great/accurate the scores will be. I'll let you know how they compare to her WISC scores, though. More anecdotal evidence -- lol!
