Hmmm....guess it is a little unusual for toddlers to scream very much or very often. Cry, yes, but scream -probably not. I think Adam's a little out of the norm there. And I suppose folks expect you to be able to "read him", if you will, since he's your son and you are around him all the time. I must admit, until they are able to communicate it's always somewhat of a guessing game. Again, he's definitely in the "spirited" category in some areas! But that's not all bad, just a little different. And he's by no means alone, I have seen/heard plenty of other children his age screaming! So don't fret it!