|Studies suggest that establishing independent and healthy sleep habits early in infancy not only improves babies' daily mood and behavior,
Great. My children have all bed shared. They're all good sleepers, even dd who was a terrible
sleeper as an infant. We transitioned her out of our bed, then into her own room, when I was late in pregnancy with ds2. She was about two. She slept well the first night
in her room, after dh and I soothed her to sleep. I stayed with her and snuggled and kissed and sang until she dropped off...and she slept until morning. On those occasions when any
of my kids fussed (or fusses) at night, dh or I respond asap - whether they're in our room or not! (This includes ds1, who woke up sobbing at the age of 15 - just a few hours before his eardrum burst from an infection. I don't care how old he is - if he wants him mom, there's a reason.) DD was a grumpy baby, and ds2 was as easy as babies get.
As for "gathering sleep data"...whatever. If the parents are sleeping, and don't get up when their baby cries, how on earth do they know if the baby is sleeping or not? Maybe it's lying awake and miserable, and not making a sound...because it knows there's no point! I don't know many CIO babies, but I know one who was still crying and upset at bedtime at an age far beyond where my kids were all sleeping through the night (although I know that doesn't mean much, because it's only my kids). I also have to wonder how she assesses "quality sleep" from what appears to be a survey-style study.
I really feel this woman went into this with her mind made up. This is just crazy.