Theory

[ailbhe]

If your baby sleeps in busy areas they will grow accustomed to noise and sleep through things - but if they are in a quiet room, they will always need quiet to sleep.

Practice:

In my house, the baby sleeps through riots or wakes up at the slightest noise apparently at random.

Comments

[pocketnaomi.livejournal.com]

My first baby slept happily in busy areas until she got old enough to decide she liked people better than sleep. Since then, unless she's sick, she will only fall asleep if there isn't anyone around to talk to. My second would only sleep on Mama for the first ten months or so, though it didn't matter in the slightest where Mama was or what was going on around her. After that, he's been comfortable falling asleep anywhere.

[pauamma]

Alternate explanation: she needs noise to keep sleeping, not just to go to sleep, and is waking up when it's quiet so she can make the noise she needs to sleep.

(Take with copious amounts of salt.)