Jasper is a really happy baby. He's 4 months old and in the mornings (not so much in the afternoon, he goes a bit wonky in the afternoon, so thats mummy and bubby time!) he can play independantly with his toys where we can see each other, but I can be on the computer/cleaning/eating etc and he doesn't mind, for up to an hour at a time, its great! He's so happy to be independant and I love the freedom!
If Jasper starts whining on the floor during a play time I'll look to make sure he's fine - if he's really upset I'll go to him immediately, but if its just fussying and whining I might step out of sight for a moment and he'll often stop because he cant ask for me if he cant see me - once he's stopped whining I go to him and have a chat with him - and he's often REALLY happy to see me if I do that, whereas if I go to him when he's whining, he still whines once I'm with him, until I phsyically pick him up.
I do this out of love though, I want Jasper to learn how to deal with SOME emotions himself. THAT SAID, we're talking about whining, not crying.... he gets cuddles each and every time he cries, because I want him to know and trust in mummies love!
Jasper also CIO to sleep, but half the time he only whimpers as I leave the room and then no another peep.
I feel that by LETTING him cry, he cries LESS!