A main source for the ages
Sleeping Through the Night: The Consolidation of Self-regulated Sleep Across the First Year of Life
Jacqueline M. T. Henderson, Karyn G. France, Joseph L. Owens, Neville Morris Blampied · 2010 · PEDIATRICS
- Children
- About 75 babies
- Where
- Not given in the summary we read
- Ages
- Birth to 12 months
- How
- Parents kept sleep diaries every month
- What it found
- Half the babies had first slept from midnight to 5am by about 3 months, but about 1 in 7 had still never done so at 12 months.
- Limits
- We have only read the summary. "Sleeping through" was counted the first time it happened, not every night.