That was addressed in the studies.
Apples and oranges.
Real conversations do not affect our brains like phone calls do.
Perhaps it’s the habit of having to listen more intently over the phone than in person.
I think it’s because the phone calls make us focus on the object, itself.
I’ve never read the studies, but I do know I have talked on my phones while driving since 1996. When I’m behind the wheel I’m driving first. I’ve never had any issues, but then again, I do have a well above average intelligence. Perhaps my brain can handle it. This is just the first I’ve heard about hands free being an issue.
If I get some time later in the day, I’ll check out some of those links I was sent.