My grandmother’s common sense could have predicted this. If you have the ability to understand and learn math, but you never use it throughout your life, you won’t remember how to do algebraic equations when you are 90.
Those famous “Twins Studies” from the University of Minnesota were conducted by Thomas Bouchard, formerly my neighbor in Berkeley when he and my husband were both students at UC. I used to babysit his daughter, Elizabeth, daily to earn extra money. I wonder how many IQ points I shaved off of that child by being exposed to me every day! LOL
And I have been following Bouchard's work since the '80s when I saw the first reports. Wow...I am impressed.
And, you survived Buhzerkley!