Originally Posted by cookmo

In my psychology text, the kitten study is done with 4 month old babies as a depth perception test. These babies are put on a red and white checked platform. Halfway across the platform the pattern stops, and the rest of the platform is glass. The babies will crawl all the way untill the glass and stop, because they are afraid of falling. They will not even continue on when their mothers call them. Perhaps one could argue that these babies learned to fear falling before four months, but in my opinion that is unlikely.