In preschool, she said ... In others, they are exploring outdoors, building Legos and playing make-believe. “I think that's very hard for parents right now,” said Markowitz at UCLA.

Mindy Kaling is acknowledging another change that has happened in her life since becoming a mom of three.

"And now it looks like I run a preschool of 40 children. There’s weird mechanical toys going up. You step on LEGOs. It really is more of a mess." Never miss a story — sign up for PEOPLE's free ...