“Brain Building in Just 12 Weeks” by Marilyn von Savant

The sub-title of this book is “The World’s Smartest Person Shows You How to Exercise Yourself Smarter”.

In the late 1980’s, the author Marilyn von Savant was listed by “Guinness Book of World Records” as having the highest IQ.

You can see her bio on her website at MarilynVonSavant.com and read more about her on Wikipedia.