How do you know if your child is happy or sad, tired or hungry, when all he wants to talk about is wasps--or the color of subway train doors? What can you do to reassure a nine-year-old who asks questions about death hundreds of times in a day? And how can you build a nurturing relationship when your little girl hates to be touched? Questions like these make parenting a child with autism or Asperger syndrome (AS) a journey through uncharted terrain. That's why understanding how kids with these disorders actually think and feel--and the striking ways in which their minds work differently from...