Infant Milestones: The First Six Months
Month 1
Physical
Weight may decrease during first week of life. Lies flexed, like in the womb; barely lifts head while on stomach; leg and arm movement consist of uncontrolled writhing and purposeless hand opening and closing; bears no weight on legs; holds hands tightly fisted; can't hold a rattle.
Language/social
Makes demanding cries, grunting throaty sounds, fleeting smiles, sleep grins; discriminates parents' voices; sees best at 8-10 inches; has blurred vision; has erratic sleep and feeding schedule. Smiles involuntarily.
Cognitive
Displays instinctive behaviors that help develop trust, such as learning that cries will be rewarded with comfort or food.




