What is the critical age range for identifying early signs of autism spectrum disorder?

The critical age range for identifying early signs of autism spectrum disorder is between 1 year to 2 years. During this period, children typically show significant developmental milestones in communication, social interaction, and behavior, which can provide early indicators of autism. Researchers and clinical guidelines suggest that parents and caregivers should closely observe behaviors such as joint attention, response to name, and social engagement during this age. Early intervention can lead to better outcomes, making it crucial to recognize any atypical patterns within this timeframe.

Earlier than this period, such as from birth to 6 months or 6 months to 1 year, may not provide enough time for observable signs to manifest distinctly related to autism. Likewise, while 2 years to 3 years is still critical for ongoing assessments and intervention, the 1 to 2-year age range is particularly highlighted because many initial signs become observable within this span. Recognizing and acting on these signs early can facilitate timely support and resources for developing communication and social skills.