Please help me understand your toddler's temperament and personality!

The reason I ask is that my little guy isn't too fussed on eye contact. He'll look at me, but never as long as my friends DS! So I'm thinking is it just temperament? I'm sure it must be as they are different in so many other ways.

So I guess I'm asking that you tell me the temperament of your LO and at what age you could really see it emerging?