Patient's question:
NoDoctor's answer:
Hello, this requires judging based on the intellectual development standards for each age period. Normal infants will emit individual sounds at 2-3 months, their eyes can follow objects, and they begin to smile; at 5-6 months, they will laugh loudly, emit monosyllabic words like "" (Bà) and "" (Mā), reach out to grasp objects, put them in their mouths, and distinguish between strangers and familiar people; at 8-9 months, they can call "" (Bàba), "" (Māma), "" (Nǎinai), imitate adult voices, pass toys between both hands, and use their thumb and index finger to pick up objects; at 10-12 months, they can use simple words to express their thoughts, wave their hands to say goodbye, pass objects to others, and ask for water to drink.