My daughter has always been fairly well behaved and listens. However, every full moon she displays defiant behaviour and talks back excessively. I have noticed this since she was a little girl (2 or 3) and have always attributed it to a full moon. Now at 13 it’s no different. It’s not only on the exact day of the full moon but a day or 2 leading up to and sometimes a day or 2 afterwards. Then everything goes back to normal. Everytime she starts acting up, I immediately check to see if a full moon is near and 100% of the time it is!