title: Reaching in the dark. How babies learn that unseen toys don't just vanish.
authors: Marina
authors: M
authors: Krakovsky
mesh_terms: D003624:Darkness; D005106:Exploratory Behavior; D006801:Humans; D007223:Infant; D007858:Learning; D010988:Play and Playthings; D002666:Psychology, Child; D014785:Vision, Ocular