Yes, that was the rationale for controlling for sinistrality. In fact, I read a
few of Hellige’s papers, which were required reading in one of my grad courses.
Here is an old video of the WADA test,
https://www.youtube.com/watch?v=SBKc_ncPzOo, which is the technique I think you
are referring
I recall reading studies on laterality which would often exclude subjects with
any degree of personal sinistrality (e.g., being left legged, or left eared,
and/or perhaps performing certain tasks with the left hand -writing with the
right hand but throwing a ball with the left) or familial
