- Babies allowed to cry themselves to sleep were not more stressed, a study says
- Nor did they have more behavioral problems than other children, research shows
- A new type of sleep training that involves delaying bedtime could be as effective as crying it out
(CNN)Many new parents long for a full night of glorious, uninterrupted sleep yet shudder at the thought of letting their baby "cry it out," the sleep training method in which parents allow babies to cry themselves to sleep. But a new study adds support to the idea that the method is effective and does not cause stress or lasting emotional problems for babies.