In reply to cosworth: Is climbing-specific dexterity any different to any other type of dexterity? Could you not just test participant's doing fiddly tasks like making a mechano model? Alternatively, you could get them to tie knots with differing thicknesses of cord, from say 10 mm to 2 mm. That any good, or does it have to be to do with placing gear and the effect of gloves on this?