First taste of solids

I had to have a medical procedure this week and because of some of the medications I was taking, Liam was forced to have bottles of stored milk for a day and a half. I wonder if there has been a study done on whether bottle fed kids are more patient than other children? When Liam is hungry, he in no way wants to wait for you to prepare a bottle. Because of this, we decided it would be a good idea for him to have his first taste of rice cereal. We were hoping that it would help him sleep through the night better and groggy parents wouldn't have to do any bottle preparation at 2 in the morning.
To begin with, we tried it with a spoon--which Liam definitely did not like. This was demonstrated by crying and spitting the food back up; we, however, were not so easily deterred and we cleverly put a tablespoon of the cereal in his bottle. He drank it all up. It is rather comical to watch Liam drink a bottle. He is all business and I am pretty sure he can tell if there is more in the bottle and will not let it out of his sight until every last drop has been drunk.
The rice cereal along with his recent self soothing technique of sucking his thumb has been helping him sleep through the night. Now we just have to conquer using a spoon!