One of the standard tests for animal intelligence is to run a maze. Here is an interesting experiment you can do with your friends. Have them do the maze below and measure how long it takes them with a stopwatch. Then, have them do the same maze again the next day. How long does it take them this time? You could continue this experiment for several days to see how much their time changes. If you would like to share your results with us, we will post them here. Just email us.