- Resistance to change
- Difficulty expressing needs (pointing instead of using words)
- Repetitive use of  words / phrases
- Laughing / crying for no apparent reason
- Preference to being alone (often aloof)
- Throws constant tantrums
- Difficulty socializing / mixing with others
- Avoids eye contact
- Obsessive attachment to objects
- No real fear of Danger
- Spinning / flicking objects
- Over / Under sensitivity to pain
- Uneven gross / fine motor skills
- Non-responsive to verbal-cues

 

*Source: Autism Society of America