system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A mother brings her 5-month-old infant to the physician for a well-baby checkup. At this time the physician should expect to see
assistant
The correct answer is  Sitting with support is normally seen in a 5-month­old infant. Stranger anxiety (fear of unfamiliar people) does not appear until approximately 7 months of age. A pincer grasp (using thumb and forefinger) appears at approximately 9 months of age, whereas object permanence (the ability to maintain a mental represen­tation of an object although it can no longer be seen) occurs between 12 and 18 months of age. Using mean­ingful words is not commonly present until at least 12 months of age.