Dr. Elizabeth Kilbey

How will the boys and girls react to identical experiments and stunts when they are tested separately, will they choose to take the same risks in a penalty shoot-out?

In this episode, we reveal how 4-year-olds experience happiness, sadness, jealousy, and rage – and take their first steps in learning how to control these powerful emotions.

Five of the Girls and five of the Boys are returning to discover they have to share the play center with the opposite sex – how will they react?  And will our experiment bear out research suggesting that at 5 years old Girls and Boys positively benefit from mixed-gender groups?

In this brand new episode, we uncover a fascinating world of playground friendships, romances, and rivalries. Self-proclaimed “geezer” Harper already has several girlfriends but has eyes on new girl Ava.

In this first episode, it’s the turn of the four-year-olds. We see them take their first steps towards independence, learning about friendships and social interaction with all the ups, downs, and humor that this entails.

In this second episode, we are back with the four-year-olds. We see them take their first steps towards independence, learning about friendships and social interaction with all the ups, downs, and humor that this entails.