Notice at the official Kinsey Institute web site:
The Kinsey Institute is NOT involved in a study about IQ; we have no reason to believe that IQ changes after childbirth. This story is circulating through emails, and is not true. The Kinsey Institute has not been, and is not involved in this ‘study.’ But thanks for checking!
And here is the diclaimer from the original source:
The Hoosier Gazette is a satirical newspaper published by The Hoosier Gazette
The Hoosier Gazette uses invented names in all its stories, except in cases when public figures are being satirized. Any other use of real names is accidental and coincidental.
I was hoping it was true to keep my mother from bothering me about grandkids. Damn.