Originally Posted by
Euphemistic
The objection is made that "scientists started the theory" that they are now debunking.
Well, almost. Brain science certainly suggested such possibilities, especially as we know that left-handedness and right-handedness and other physical phenomena are linked to specific hemispheric dominance.
So, since we have discovered certain areas of the brain that handle certain concepts and ideas, the theory made sense, and it took off with psychologists. So scientists had a hand in the idea, but it was not their doing only.
But I wouldn't call this experiment a debunking, at least not yet. One experiment failed to find what they expected. All that means is that the mechanism they expected to uncover is probably not the mechanism at work. In time to come, "hemispheric dominance" may not be associated with "more" signal activity, but other distinctions.
And in any case, the model remains useful. It may not be completely accurate, but it conveys certain labels and ideas that help in generalized thinking.