CBS has issued the press release for the fourth episode of The Big Bang Theory's new season, "The Cohabitation Experimentation", which airs Monday, October 10.

The Cohabitation Experimentation – When Amy’s apartment floods, she proposes a “cohabitation experiment” with Sheldon. Also, Howard and Bernadette are upset when Koothrappali learns the gender of the baby before they do, on THE BIG BANG THEORY, Monday, Oct. 10 (8:00-8:31 PM, ET/PT), on the CBS Television Network.