The screen time crowds out time they could be interacting with the real world, engaging with all of their senses, and interacting with people. Two hours per day adds up over a critical time of their life that their peers are beginning to learn how to accurately learn to model the world and communicate.
At one years old, 2 hours is massive percentage of their "awake and aware" time, considering how much time they sleep and eat at this age.
At one years old, 2 hours is massive percentage of their "awake and aware" time, considering how much time they sleep and eat at this age.