A study that questioned earlier findings
Effects of Sleep Position on Infant Motor Development
Beth Ellen Davis, Rachel Y. Moon, Hari Cheryl Sachs, Su‐Ting T. Li · 1998 · PEDIATRICS
- Children
- About 350 babies
- Where
- The United States
- Ages
- First year
- How
- Parents kept a log of when their baby reached each milestone
- What it found
- Babies who slept on their tummies reached rolling, crawling and pulling to stand earlier than babies who slept on their backs, but they walked at the same age.
- Limits
- We have only read the summary, which doesn't give the size of the difference in months.