The 2/3 Express train annoys most New Yorkers who have to endure it's way-too-loud passing on the subway platform. Yet our kid spent the first seven months of her life either sleeping through it, being startled then uninterested, or just staring at it as it rumbled by.
Then on Saturday, the 2/3 sent her into a head-to-toe-shaking, white-faced-with-terror panic attack. Also, she's started hating the park swing; before, she'd swing for half an hour--plenty of time to go get a Diet Coke at the deli [KIDDING]. She's very clingy, doesn't want to hold her bottle anymore, she seems to be regressing in various ways.
On the other hand, she just started crawling like crazy; the other day, she pulled herself up on her feet on the edge of the couch; and she climbs over/to everything as if the world's her obstacle course.
Brazelton writes (where's that book? Oh, other city.) about touchpoints, big leaps in development are somehow connected (preceded? accompanied?) by what looks like backsliding as a kid tries to cope with her new repertoire. Maybe I'd better head over to B&N and read up.