Infant Developmental Milestones -- 3 to 6 Months

Between three and six months old, your infant will achieve some impressive abilities, both physically and socially. According to the Denver Developmental Screening Test, infant developmental milestones for between 3 and 6 months may include rolling over in both directions, imitating sounds, reaching for nearby objects, and smiling and laughing spontaneously, among other things. However, children develop at their own pace, so do not be discouraged if your child has not yet reached these developmental milestones.

Early Infant Developmental Milestones for 3- to 6-Month-Old Infants

From the age of three to six months, infants will make some impressive leaps developmentally, both physically and socially. They will start to look more like a little person, with their bodies becoming more proportional and their faces more defined. They will also get stronger and develop a greater sense of equilibrium and coordination.
 

Specific Developmental Milestones for Your Baby

According to the Denver Developmental Screening Test, the following skills are likely to emerge between 3 months and 6 months:
 
New Physical Abilities -- Gross Motor Skills
  • Sit up unassisted
  • Hold the head steady while sitting upright
  • Completing a half push-up while lying on their tummy, by pushing up with their arms
  • Roll over in both directions.
     
Language Skills
  • Imitate sounds and gestures that are heard around them
  • Turn towards the source of a sound or voice
  • Get attention by babbling and not relying solely on crying.
     
Fine Motor (Adaptive) Skills
  • Press down with the upper lip to draw food from a spoon
  • Clear vision, including the ability to see the full spectrum of colors
  • Accurately reach for objects nearby
  • Grasp a rattle.
     
Personal/Social Skills
  • Focus all of their attention on toys and other small objects
  • Spontaneously smile and laugh
  • Make different, more advanced sounds to communicate with the people around them.
     

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Written by/reviewed by: Arthur Schoenstadt, MD
Last reviewed by: Arthur Schoenstadt, MD
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