Does not babble, point, or make meaningful gestures by 1 year of age.
Does not speak one word by 16 months.
Does not combine two words by 2 years.
Does not respond to name.
Loses language or social skills.
Some Other Indicators
Poor eye contact.
Doesn't seem to know how to play with toys.
Excessively lines up toys or other objects.
Is attached to one particular toy or object.
Doesn't smile.
At times seems to be hearing impaired.
Borrowed from Strock, M. (2004). Autism Spectrum Disorders (Pervasive Developmental Disorders). NIH Publication No. NIH-04-5511, National Institute of Mental Health, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD, 40 pp. Accessed on March 19, 2006 http://www.nimh.nih.gov/publicat/autism.cfm
