Autism Symptoms Checklist
The first autism symptoms checklist provided gives a list of the symptoms and signs associated with autism as indicated by the DSM-IV diagnostic criteria(1). The second checklist for autism in toddlers (CHAT) is one that may be used by a physician at an 18 month check up to determine whether a child is displaying signs or symptoms of autism(2).
Both checklists are not intended to diagnose your child, but should be able to provide you with a good starting point for determining whether your child should have further evaluation.

You will need Adobe Reader (the latest version is recommended) installed on your computer in order to open and print the autism symptoms checklists. You can get Adobe Reader here (a new window will open so you can download it without leaving this page, but you will need to temporarily disable any pop up blockers to open the new window and the checklist).
If you want to open the file in your browser window, just click on the checklist. However, if you want to download the file to view later, then right-click on the link and choose "Save Target As" or "Save File As." Then select where you want to save the file on your hard drive.
Once you have saved the file, locate where you saved it, and double click to open.
In order to print, open the downloaded file, and select the "Print" option.

In addition to the autism symptoms checklist, you may also find an ADHD checklist available to download.
Developmental Disorders
Autism Spectrum Disorder
Using social stories Autism Treatments Asperger’s Syndrome
Rett’s Disorder
Childhood Disintegrative Disorder
Fragile X Syndrome
Attention Deficit Hyperactivity Disorder
Signs of ADHD
ADHD Checklist
Causes of ADHD
ADHD Treatments
Behavior Disorders
Oppositional Defiant Disorder
Conduct Disorder
Sensory Processing Disorders
Tactile Defensiveness
Proprioceptive Dysfunction
Auditory Processing Disorder
Oral Input Dysfunction
Sensory Processing Disorder Treatment
School Behavior
Listening Skills
Study and Homework tips
Homework charts
Tips for Improving Attention and Memory
Applied Behavior Analysis
Discrete Trial Training
Picture Exchange Communication System (PECS)
Printable Behavior Charts
More free behavior charts
Chore Charts
Homework Charts
Behavior Help
Using social stories
Free Child Behavior Help Book
Dealing with Temper Tantrums or Meltdowns
Preventing Attention Seeking Behavior
Self Injury
Ways to Deal with Defiant Children
Tips for helping your child easily change activities
Dealing with picky eaters
Sleep problems
Skin Picking
Aggressive Behavior
Work at home jobs
Virtual call center Jobs
Revealing work at home scams
References
1. American Psychiatric Association. (2000). Pervasive Developmental Disorders In Diagnostic and statistical manual of mental disorders (Fourth edition---text revision (DSM-IV-TR). Washington, DC: American Psychiatric Association, 70-75.
2. Baron-Cohen, S. et. al. (1992) "Can autism be detected at 18 months? The needle, the haystack, and the CHAT," The British Journal of Psychiatry, 161, pp. 839-843.

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