When pre-school children in the US are shown this brain teaser, they often answer “left.” Why? “Because you can’t see the door.”This teaser illustrates a good concept about how our memory works (and also our cognitive flexibility). Imagine if our memories were absolutely perfect. On the one hand, you might have been able to answer this puzzle correctly, since you could compare this image to all the school bus images you have in your mind, and only the ones going left would match.
Imagineer7's Weblog 