I don't know if it's the fact that she has had to learn to be patient, or that she's just got a different temperament, but Cecilia is infinitely more patient than John Paul was at 9 months.
Heck, she's more patient than he is NOW.
She'll sit there with a toy for long periods of time, methodically figuring out how to take it apart and put it back together. She's mastered toys that John Paul didn't have the patience for until he was a year old. It's amazing seeing her sitting there with her stacking rings, sticking her little tongue out in concentration, calmly failing 5 times for every success. John Paul at the same age would try twice and then whine, frustrated with his failures.
So what do you think? Is it because she's number 2? Is it just a difference in temperament? A little of both?