• Insistence on sameness; resistance to change
• Difficulty in expressing needs
• Repeating words or phrases in place of normal responsive language
• Laughing and/or crying for no apparent reason and includes showing distress for no apparent reason
• Preference to be alone or having an aloof manner
• Tendency for tantrums
• Difficulty in mixing with others
• Not wanting to cuddle or be cuddled
• Little or no eye contact
• Unresponsive to normal teaching methods
• Sustained odd play
• Spinning objects
• Obsessive attachment to objects
• Apparent over-sensitivity or under-sensitivity to pain
• No real fear of danger
• Noticeable physical over-activity or under-activity
• Uneven gross or fine motor skills
• Nonresponsive to verbal cues; may act as if deaf though hearing tests with normal range.
• Any loss of previously acquired speech, babbling or social skills.