It is revealed that Amy intentionally brought the book to spark Sheldon's interest in having their own children—a plan that seemingly works as Sheldon begins discussing the logistics of having triplets or quintuplets.
Sheldon and Amy use the children to test cognitive and motor skills, much to Howard's amusement and Leonard's distress. [S12E17] The Conference Valuation
Back at home, Howard is left alone with the kids and invites the guys over for company. The day takes a turn when Sheldon finds a book on developmental experiments for children. It is revealed that Amy intentionally brought the
In episode " The Conference Valuation " (S12E17), the story splits between a high-stakes pharmaceutical convention in San Diego and a chaotic "science day" back in Pasadena. The Pharmaceutical Convention The day takes a turn when Sheldon finds
Leonard realizes his mother, Beverly, performed similar experiments on him throughout his childhood. When he calls her to complain, she reveals that the "experiment" on him never actually ended.
Watch Penny's masterful drug-pushing pitch at the convention:
Danny offers Penny a job, leading her to realize she doesn't always feel appreciated by Bernadette.