| An early sign of autism may include delayed development of spoken language. |
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| A child with autism has a vocabulary of less than 50 single words and/or no 2 word phrases. |
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| A child with autism has difficulty using nonverbal forms of communication to compensate for delayed language development. |
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Children with autism demonstrate inconsistent use of eye contact, expressions to convey needs and desires,
gestures (such as pointing or shaking head), and facial expressions. |
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| A sign of autism includes inconsistent response to sounds. |
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| Autistic children may not respond to his/her name being called; parents and/or caretakers may suspect deafness. |
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| An early sign of autism may be failure to direct the parent’s attention to objects or events to share interest. |
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| Children with autism may point to juice to request it, but do not point to the sky to share interest in an airplane. An autistic child may bring a toy to the parent for help, but does not hold up a toy to show it to the parent for the purpose of a conveying interest or approval. |
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| Children with autism may show failure to imitate simple adult movements. |
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| A child with autism may not wave good-bye or imitate hand movements in games like pat-a-cake. |
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| A early sign of autism is trouble with reciprocal, back-and-forth interaction. |
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| Children with autism may show interest only on his/her terms. They may initiate games (or affection) but not respond when parents or caretakers initiate them. |
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| Children with autism display a lack of interest in simple social games. |
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| Infants and toddlers with autism may be more interactive during physical games such as swinging or tickling, than during social games such as peek-a-boo. |
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| An early sign of autism includes a lack of interest in other children. |
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| Children with autism may show limited interest in watching or playing with other children. |
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| Early signs of autism include repetitive and restrictive play. |
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| A child with autism may show limited interest in toys, may play with toys in an unusual manner (for example, lining or stacking them up), play with toys the same exact way each time, and/or may show limited imagination during play. |
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