Hi, Our son was officially diagnosed as "sensory defensive". He is 6-3/4 and was also evaluated to need PT for some motor weakness. Needless to say this was shocking as he is in perpetual motion. I have been reading up on it. We had his IQ tested in Jan and he tested "gifted" just missing the DYS cutoff but the evaluator said this was not a good indicator of his true ability because of his distractibilies. So does anyone know how much effect SPD would have on the IQ results? I know it has severely impacted his school performance. At least we are on the right track. Thanks.