Before an article is deemed appropriate to be published in a peer-reviewed journal, it must undergo the following process: 1  The author of the article must submit it to the journal editor who forwards the article to experts in the field. Because the reviewers specialize in the same scholarly area as the author, they are considered the authorâs peers (hence âpeer reviewâ).
Your baby will probably learn to sit independently between the ages of 4 and 7 months. Your baby will have mastered rolling over and holding his head up. Most babies can sit well for several minutes without support by the time they're 8 months old.
The muscles they need to use develop gradually from birth, finally getting strong enough sometime between four and seven months. By the time they're eight months old, 90 per cent of babies can sit well without support. While you can prop your baby in a sitting position almost from day one, true independent sitting doesn't begin until your baby has head control. Starting at about four months, your baby's neck and head muscles strengthen rapidly, and she'll learn to raise and hold her head up while she's lying on her stomach.