Questions With Complete Solutions
1 month
• Flexed position
• Can turn head side to side when prone
2 months
• Posterior fontanel closed
• Vocalizes distinct from crying
• Social smile
3 mos
• Holds objects but will not reach for them
• Turns head to follow sounds
• Coos, squeals to show pleasure
4 mos
• Moro, tonic neck, rooting reflex gone
• Able to sit propped
• Rolls from back to side
• Plays with hands
• Laughs aloud
5 months
• No head lag
• Rolls from abdomen to back
• Grasps objects voluntarily
birth weight doubles in this month or next
, 6 months
• Teething: two lower central incisors
• Rolls from back to abdomen
• Imitates sounds, actions
• Babbles one syllable
• Briefly searches for dropped object
7 months
• Sits, leaning forward on hands
• Transfers objects from one hand to another
• Increasing stranger danger
8 months
• Sits steadily unsupported
9 months
• Pulls self to standing position, creeps along furniture
• Crude pincer grasp
10 months
• Develops object permanence
11 months
• Cruises or walks with both hands held
12 months
• Birth weight tripled
• Birth length increased by 50%
• Walks with one hand held•