Autism 5 for 400
• No words by 16 months
• No babbling by 12 months
• Any loss of speech or babbling or social skills at any age
• No big smiles or other warm, joyful expressions by six months or thereafter
• No two-word meaningful phrases (without imitating or repeating) by 24 months
• No back-&-forth gestures, such as pointing, showing, reaching, or waving by 12 months
• No back-&-forth sharing of sounds, smiles, or other facial expressions by 9 months or thereafter
Robert C. Gates
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