1. Does your child tend to focus on one subject to the exclusion of all others?    Yes - he latches onto one topic of interest and learns everything there is to know about it. He won't even think about something else!   No - he has some favorite topics, but displays a wide range of interests.       2. Does your child have difficulty interacting socially, particularly when it comes to nonverbal communication?    Yes - he/she seems unable to pick up cues in people's body language and vocal inflection.   No - he/she seems to be able to read the mood of a room pretty well, and understands what is and isn't appropriate in a conversation.       3. Does your child vary his or her vocal inflections, volume, or pitch?    No - he/she speaks in a monotone, regardless of the subject or the environment.   Yes - he/she shouts, whispers, laughs, whimpers, and more.       4. Does your child adhere to rigid, repetitive routines when it comes to everyday tasks?    Yes - everything ha...