“It’s not the older people that I was concerned about. I was saying if they want to compare a young adult brain to an older adult brain, they should make sure that ALL the younger people measured should be over 25, because that’s the age when the brain is fully developed and the brain’s structure is done going thru major changes.”
Well, SAM the article clearly states the young adult brain 20-30 functioned the same. IOW’s in the twenty something group the two particular brain regions tended to be active at the same time.
You are missing my point.
Because the article does not give the explicit age range of the younger 38 people, just ‘20 somethings’, for all we know they could all be in the lower 20s, and thus, ALL still having not fully developed, adult brains. And you would expect ALL of these not yet fully developed adult brains to function the same as the results indicate.
You assume that the sampling of the 38 young adults spans the ages of 20-29. But it is quite possible that that is not the case, and that some or all of the people still have developing brains.