Lori - interesting! I think 20s. might be a huge difference. I am looking up ds' numbers to see what the difference was there.
Yeah, both below 40seconds, so 20s could be a pretty substantial difference between hands.
Our ds was average on right hand, and above avg. on the left because most people are relatively slower there and his left was just a little high time wise. They also count 'drops', but ds8 did not drop any it looks like.
Not that you want to go all obsessive over this one portion of the testing, and until you have your son's numbers you can't "properly obsess" anyway, as someone else on this board once put it to me
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But it does sound curious!