If you got a +13 and you’re right handed then I guess my brain’s a tad more insistent about it for some reason. I mean…it’s not like I never use my left hand for anything…like right now on the keyboard for instance I’m fine using both hands. And when working at my drafting table or around the house, both hands are always busy. But given that specific set of questions to answer…dang…I was answering with “always right” over and over and it wasn’t like I had to even think hard about it on any of them. Using a hammmer…check. Holding a match to strike it…check. Using my toothbrush…check. And so on. No, I just don’t do any of that with the left hand. It would feel very awkward even trying, so I don’t. But it never ever occurred to me that’s an extreme behavior. I always thought it was normal right handedness.

Be nice to see what the spread on that questionnaire is, from -24 to +24. They only post data on that page from a study that breaks it out three ways (Left, Mixed, and Right).

I don’t know that this will answer your question, but the questionnaire at this site may give you some idea of what they look for.

http://faculty.washington.edu/chudler/rltab75.html

Based on their scoring I’m right-handed, but with only +13 on a scale of -24 to +24, I would have to guess that I’m probably not extremely right-handed.

How do I tell if I fall into that category from the point of view of the researchers? I can tell what it is to prefer my right hand over my left in tasks like writing and drawing. I’ve tried occasionally using my left for stuff like that now and then as a matter of fact and it’s nearly impossible. But I can’t gage whether my difficulty in that regard is extreme or not since I can’t know from first…er…hand experience how difficult it is for anyone else.

Can anyone point me to something like a clinical description of extreme right-handedness? Obviously there’s some kind of standard being applied here…right? I’m really finding this fascinating. I’ve never heard this term before.