I don't think the SB-V is timed at all; at least when my son took it, he wasn't timed. He was tested using the SB-V at age 5 and then recently took the WISC-IV at age 7 (almost 8). I'm not sure if this is due to test differences, time constraint differences, or age, but my ds scored higher on the SB-V than the WISC-IV. I'm not sure how the scores compare.