Object Permanence

Object permanence is a baby's ability to realize something still exists even though they can't see it. This on average happens at around 9 months. Annabelle has been demonstrating this for some time. However, today, it was really strong. She likes keys..likes to chew on them. She managed to get a hold of Paul's keys. I thought it was gross for her to be chewing on it. I took them away and she had her first temper tantrum. You would have thought she was writhing in pain by the way she was crying for those keys. Usually, if I take something away, I hide it or move her out of the room. That didn't work this time. She knew those keys were around somewhere and darn it, she wanted them. Wow...that was some crying fit!