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How to Observe Developmental Delay?

Updated: Sep 25, 2023

  1. Regularly Record Your Baby's Height, Weight, and Head Circumference If your baby is under 3 years old, it's important to regularly monitor their height, weight, and head circumference (which is typically done during vaccinations at medical facilities). Then, compare your baby's growth to the growth chart in the "Child Health Handbook" to see if your baby's growth curve falls between the 3rd and 97th percentiles (you can refer to the online version of the child growth chart here: If all three measurements (height, weight, and head circumference) are below the 3rd percentile, it may indicate comprehensive growth delay. In this case, consult a pediatrician for further evaluation. If only one of the measurements is consistently below the norm, you can observe for another month while making adjustments to their diet, sleep, exercise, etc. If there's still no improvement in growth, don't worry too much. Additionally, if the parents themselves are of smaller stature, it's common for their children to also be smaller.

  2. Observe Your Baby's Developmental Performance In addition to height, weight, and head circumference, it's important to observe your child's motor skills, cognition, language development, emotional and social adaptation, as these are crucial developmental indicators. Parents can refer to the developmental milestones chart in the "Child Health Handbook" that corresponds to their child's current age to see if their child is displaying the appropriate behaviors (you can refer to the online preschool child development checklist here:

Dear parents, if you notice that your child is not achieving the expected developmental milestones for their age, don't become overly anxious. Sometimes, children simply lack experience, and you can create opportunities for them to try new things. Perhaps your child is even more talented than you expected, and you've just been doing too much for them. If you do observe that your child's development might be slower, please make sure to take your child to a medical facility for a professional evaluation.

Early warning signs are crucial because the earlier developmental delay is detected, the more appropriate support and assistance can be provided. Some early signs may include:

  • Delayed language development, not reaching language milestones for their age.

  • Slow motor skill development, such as sitting, crawling, walking, etc.

  • Social skills not meeting expectations, having difficulty interacting with other children.

  • Cognitive development lagging, such as difficulties in learning, memory, and problem-solving.

If you notice early warning signs in your child, don't panic. It doesn't mean your child won't succeed; it offers an opportunity for you to take action and seek professional help. Early intervention can improve your child's developmental prospects and lay a solid foundation for their future. Contact us:


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