Skip to main content

So what are the early signs of Autism and why should you care? You may be wondering child is facing difficulties in certain areas. You may have also noticed that your child is not meeting the emotional, social and behavioral growth milestones (check out our Development assessment tools for children) that are normally expected of other children of similar age. Before you pop the question “Does my child have autism?” to your physician, it is now time to do an assessment of your own using this Autism Symptoms Checklist.

Taking the Autism Online Test

In this page you will find the detailed Autism symptoms checklist with a downloadable PDF file. But if you are wondering whether you or your child has autism, why not save time and take the Autism Test Online? This test will evaluate you (or your child) against the known symptoms of Autism, Asperger’s or ADHD and give you an accurate report. Use the below Test wizard to automatically guide you to the appropriate test. Otherwise, scroll down and continue reading.


Key Signs of Autism

Before we go through this detailed symptoms checklist for Autism, let us take a quick look at some of the key signs of autism in babies (<2.5 years), toddlers (between 2.5 to 5 years) and children (from 5 to 12 years). This is usually the time when most kids are usually diagnosed with Autism.

Autism Signs in Babies

Fig 1: Early signs of Autism in Babies - Keep a eye out for these symptoms

Fig 1: Early signs of Autism in Babies – Keep an eye out for these symptoms. Download Infographic

Autism Symptoms in Toddlers

Autism signs in toddlers

Fig 2: Some common symptoms of Autism in Toddlers (age 2 to 5 years). Download Infographic

Autism Signs in Children

autism symptoms in children

Fig 3: Children above 5 may show different symptoms of Autism

How to Use this Autism Symptoms Checklist

As soon as you notice that some of the above developmental skills are lacking or seems to be slow, you should start the following assessment. The screening results should change (for the positive) as the child grows. At DW Autism, we recommend that you follow the plan below:

Under Normal Child Development

  • Get first assessment done (using the checklist below) when child is 18 months old
  • If the result is normal, the next assessment should be when the child is 24 months (2 years) old
  • The final screening should happen at 36 months old

tipNote that autism in girls differs a lot from autism in boys. Therefore in some girls, Autism signs may not be visible until they reach early teens.

In Case You Spot any Abnormalities

  • First assessment to be completed when the child is 18 months old
  • If results are not fully normal, the next assessment should happen when the child is 20 months old.
  • This time keep a close eye on any improvements as compared to the previous screening.
  • If you believe your child may have autism, refer to the end of this article to take a formal Autism Test

Examples of How to use the Checklist:

Examples of How this Autism Symptoms Checklist should be used

Fig 4: Examples of how this Autism Symptoms Checklist should be used

Whether or not you see repetitive patterns, it is important to make a note of the contributing factors. This may seem tedious at first; however, the information that you and you alone can gather is invaluable if your child needs a formal assessment. You know your child! Therefore, the inputs that you provide would be crucial for the physician to prescribe the right developmental tools for your child.

pdf download
You can either bookmark and print this page or download a FREE soft copy by clicking the pdf link on your left. Make sure you have enough copies and create a folder to store the results in. Be sure to date the form for future references.

Autism Symptoms Checklist

Table 1: The Autism Symptoms Checklist – Identifying the 60 signs of Autism in kids

As you can see outside influences or events such as moving, adding a new sibling to the family may have an influence on your child’s behavior. I highly recommend repeating the assessment in these instances every month! It takes any child time to accommodate these changes to their lives and daily schedules. However, you don’t want to pass this off as “just because” when there might just be an underlying complication. Early diagnosis, treatment, and therapy that ensures your child the best possible future!

How to Interpret the Results?

24 Yes + 15 Repititive = 50% Chance

As you can see, if your answer to at least 40% questions (24) is “Yes” and at least 25% (15) of those behaviors are repetitive in nature, then there is more than 50% chance that the child may have Autism. Under these situations, before you panic, you should go to our Autism Test Center and try out one of the following tests based on the age of your child.



Join the discussion 6 Comments

  • Alan Edwards says:

    Research tells us that autism tends to run in families. Changes in certain genes increase the risk that a child will develop autism.

  • ONNA says:


    • Mark Hatton says:

      Do you now (have you before) see any other typical ASD symptoms?
      What are the other signs of “regression”?
      How would you describe his him environment?
      Encopresis may be a more accurate diagnosis, take a look at that.

  • Mike says:

    Thank you for sharing very helpful.

  • Rose Bordelon says:

    Hello, My name is Rose my sons name is Sammy. He exhibits the majority of the checklist. I need information on getting him tested for autism.

  • constance says:

    hello my name is constance and my sons name is aaron. i have jsut read your article and went through the check-list and my son does some of the things. i have a scheduled appointment to take him to a childrens developement clinicin october to be evaluated.

Leave a Reply