AP PSYCHOLOGY

Detailed explanation-1: -Head banging during sleep is an example of sleep related rhythmic movement disorder. RMD is very common in healthy infants and children. It can occur in both boys and girls. Another common form of RMD is body rocking.

Detailed explanation-2: -Avoid devices designed to maintain head elevation in the crib. Elevating the head of a baby’s crib is not effective in reducing GER. It’s also not safe as it increases the risk of the baby rolling to the foot of the bed or into a position that may cause serious of deadly breathing problems.

Detailed explanation-3: -By the time they are three months old, your baby should be able to lift their head and the top part of their chest well up, and support themselves with their hands when they’re on their tummy . Your baby will probably be strong enough to hold up their head in a car seat or sling.

Detailed explanation-4: -Thankfully, that all begins to change around 3 months of age, when most babies develop enough strength in their neck to keep their head partially upright. (Full control usually happens around 6 months.)