With 3-month-olds. babies this young don't have the motor skills to grab for anything. so how do they show a prirchs? it turns out by staring. babies this young are known stare longer at things they like, and they avert their eyes from things they don't like. >> noah, who do you like? >> noah looking at the bad orange bunny then switches his gaze to the good, green bunny and he keeps staring. >> they're not old enough to reach, but in their looking they will orient visually to the positive characters. much, much more so. >> they look more at the positive character? >> lots longer at the positi...