A lot about the birthing experience has changed during the past 50 years. A lot about child psychology hasn't. For example, sibling rivalry: sometimes, a kid just isn't ready for some little squirt to come along and invade his space-his own room. So what if there's an extra bed in the room…isn't that were the stuffed animals are supposed to sleep? How could a couple of otherwise sensible parents just bring a new kid home without even consulting their very own son? Still, a younger sibling can be in need of a big brother's guidance. And a big brother, even if not so very big, can have a lot to offer - once he gets used to the idea.