Was/is your intelligent child a poor sleeper, at least in the daytime? My DS (age 2 and a half, but with language skills of a 4yo and very good visual recognition and memory) never slept easily in the daytime, though gentle sleep training sorted his night sleeping out. Now DD (3 months), despite my best efforts with routine etc, will only sleep for 45 mins at a time in the day. People always remarked on how 'alert' DS was when he was a baby, and I'm getting the same comments with DD. What's your experience?