Check out this video from Volume 3 of the 3 volume vook, Mind in the Making - The Essential Life Skills Every Child Needs, by Ellen Galinsky ... ... <看更多>

Since the 1960s, developmental psychologists point to the " Visual Cliff "—an experiment that plops babies on a fake precipice—as proof that ... ... <看更多>

But halfway across is a visual cliff which the baby can tell drops off steeply. The plexiglass top continues so it's perfectly fine to ... ... <看更多>

Aug 30, 2016 - Depth Perception: The Visual Cliff - Eleanor Gibson. ... <看更多>