Should I Worry? Understanding Developmental Milestones

Jul 28, 2021
Should I Worry? Understanding Developmental Milestones


Behavioral milestones are a set of skills, abilities, or behaviors shown throughout infancy and early childhood. These development milestones are significant indicators of how a child is doing and whether there are any developmental delay issues.  Each of these milestones involves physical, cognitive, social, emotional, and communication skills that babies and toddlers need to acquire as they develop and grow.


Understanding baby developmental milestones can help you keep an eye on your child's development and growth. Throughout this post, we'll explore the different milestones that babies reach each month and what to do if you are concerned that your baby is experiencing delays.



Baby's Developmental Milestones Each Month

A crucial reason to monitor your baby's development milestones is to know whether the child is making timely progress. If a child does not reach a milestone, they may require additional help and support to reach their full potential. The following checklist outlines the critical milestones your child must reach during their first year:


  • 1 Month

    • Clenches hand firmly in fists
    • Eyes wander and focus on things between 8 and 12 inches away
    • Loves black-and-white and high-contrast patterns
    • Baby can discern between sweet and bitter tastes, tending to prefer sweet tastes such as breast milk
    • Reacts quickly at loud noises
    • When tummy-down, the infant attempts to hold head up for a moment

  • 2 Months

    • Starts to smile at people
    • Makes sounds like cooing, gurgling, or grunting
    • Can briefly calm themselves (can bring the hand to mouth and suck on it)
    • When activity does not change, the child begins to act bored (cries, fusses)
    • Recognizes parent or caring adult
    • Eyes follow moving objects such as rattles and toys.
    • They will be able to make more fluid movements with their arms and legs

  • 3 Months

    • Closes and opens hands
    • Grabs and shakes toys
    • Holds dangling objects and swipes them with hands
    • Whenever feet are placed on a hard surface, the baby pushes down on the legs
    • When lying on tummy, lifts head and chest
    • When lying on the stomach or back, the baby stretches its legs out kicks
    • Imitates some sounds and turns head to sound source and smiles at the sound of the parents' voice
    • Observes faces intently
    • Responds to touch and different textures

  • 4-5 Months

    • Lie on his back and roll from front to back
    • Sitting up with support
    • The baby holds up his head and chest
    • Gains a clearer vision and enjoys seeing more patterns, shapes, and colors
    • When laying on the stomach, it pushes up to the elbows
    • One-handedly reaches for objects
    • Enjoys playing with people and might cry if the play stops
    • Coordinates sight and movement, spotting and reaching for the thing they want
    • Eyes follow moving objects from one side to the other
    • Various types of cries to express hunger, pain, and tiredness
    • Replicates some facial expressions, like frowning or smiling

  • 6-7 Months

    • Responses to the emotions of others and are often cheerful
    • Jabbers with consonants ("m," "b")
    • Start to string vowel sounds together while speaking, such as "ah, eh, and oh."
    • Begin passing things back and forth
    • Starts sitting without support
    • Enjoys looking in the mirror
    • Reacts to own name
    • Uses raking grasp (not pincer)
    • Whenever feet are placed on a hard surface, the baby pushes down on the legs
    • Begins to recognize familiar faces and to distinguish strangers
    • Sometimes crawls backward before moving forward, rocking back and forth
    • Displays curiosity and tries to get things they can't reach
    • Rolls both ways (front to back, back to front)
    • A shows an interest in food and will open their mouth when spoon-fed.

    Makes sounds in response to sounds

    Starts to respond to "no."


  • 8-9 Months

    • Begins to crawl or may already be crawling well
    • Bounces when in a standing position
    • Bangs toys together and tosses balls and other things
    • Makes specific sounds to express emotions such as joy or frustration
    • Thrives on the sense of taste and touch to discover the world
    • Points at objects across a room
    • Get your attention by making noises
    • With their thumbs and index fingers, they can pick up small objects precisely now and have improved the way they focus on examining objects closely
    • Has a favorite toy and tends to cling to known adults. 
    • Copies gestures; makes a wide variety of sounds like "mamama" and "bababa."
    • Plays peek-a-boo
    • Searches for what they see you hiding
    • Attempts to stand; crawling

  • 10-12 Months

    • From a standing position, squats down
    • Lifts the body using furniture
    • Moves from the stomach to a seating position
    • Stacks play bowls, cups, and other things
    • Start feeding themselves using fingers
    • Waves "bye-bye"
    • Takes steps
    • Can understand simple one-word requests or phrases
    • Shy with strangers; repeats sounds or actions to catch the attention
    • Makes sounds with varying pitches, such as "mama" and "dada."
    • Follows simple instructions
    • Starts to use objects correctly (drinks from a cup, brushes hair)
    • May stand alone
    • Releases objects into a big container
    • Sits and throws objects while maintaining balance
    • Mimics scribbling
    • Can turn pages in a book
    • Plays with objects in many ways (shake, bang, throw, drop)
    • When a parent leaves, the baby cries
    • Bounces to music

Warning Signs of Potential Developmental Delay

Although minor, temporary delays may not be cause for concern, prolonged delays in reaching milestones may indicate long-term problems. Below are a few warning signs that you should keep an eye out for your baby's development:


Physical Signs

  • Doesn't seem to hear or see things clearly
  • Their eyes cannot follow moving objects
  • Crosses eyes frequently
  • Does not notice hands by 2 months
  • Cannot hold their head up by 3-4 months
  • Does not seem to grasp, reach, hold, or bring objects to their mouth by 4 months
  • Delay in rolling over by 5 months
  • Muscle stiffness or floppiness preventing arm and leg movement
  • Awkward posture or limping body
  • Not capable of sitting well by 8 months
  • Does not crawl by 9 months
  • Unable to stand up even with assistance by 12 months


Behavioral, Emotional, Social, and Communication Signs

  • Persistently cries for more than three hours in the course of a day even after comfort and feeding, especially after 3-4 months
  • Not curious about what is going on around them
  • New faces do not seem to bother them and are not seemingly frightened by them because they do not recognize familiar faces.
  • No laughing or squealing at 6 months
  • Does not respond to own name by 9 months
  • Unable to make gestures like waving or pointing to things by 12 months
  • Does not smile at people
  • Not interested in games such as peek-a-boo by 9 months
  • Unable to be cradled, cuddled, or comforted at night at 5 months
  • The infant doesn't babble or shows no back-and-forth exchange of sounds or facial expressions by 9 months
  • Loud noises do not evoke any response
  • No response to words such as 'no' or 'bye-bye.'



If There Are Signs, Should I Worry?

It's normal to worry when your child doesn't seem to be hitting milestones as quickly as they should be or isn't in line with other infants as they are. For one thing, each child is unique, and so are each parent's experiences. In general, children's abilities and skills develop along the same path, though their timing may vary. 


This guide is only an average, which means that not every child will attain a baby's developmental milestones at the same time. Babies accomplish milestones at different rates. Some advance faster than others, and some advance more slowly. Some even skip milestones entirely. As with any developmental milestone, it is infrequent for a child to skip two consecutive ones. 


Additionally, the cause of kids showing a mild delay in development does not usually lie in a medical problem but rather in natural factors. Most of the time, the solution consists of making sure that an environment around your child is stimulating. However, being cautious is not wrong. Being proactive about problems as early as possible will make all the difference as your child grows.



Talk to a Pediatrician for Any Developmental Concerns

Consult your pediatrician or health care provider if you have concerns about your child's development. Consider having your child's pediatrician conduct a developmental screening if you detect any signs of developmental delay. Early diagnosis of absent baby developmental milestones helps children make better progress. If you need any guidance and consultation about your child’s developmental milestones, call or book an appointment with Sang Pediatrics



Additional Sources

  • Learn the Signs. Act Early- This blue book includes milestone tracking tools to help parents monitor their child's development.
  • Stay on top of all aspects of your baby's development with the Centers for Disease Control and Prevention (CDC) free app, available for Apple devices and Android devices as well.






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