Christina Goodney Bailey My son was diagnosed with Asperger’s syndrome when he was four. The first time someone suggested that Sam might have autism was just after his second birthday. Between those two milestones, we saw two pediatricians, a developmental pediatrician, and a speech pathologist, with inconclusive results. For two years, my husband and I rode a seesaw of emotions, playing “Does He or Doesn’t He Have Autism.” When Sam spontaneously shared his blueberries with a playmate, we breathed easier. When he spun a rattle repeatedly, we worried.  When Sam imitated me sweeping, I called my husband triumphantly.  When he had a meltdown on the playground after another child attempted to interact with him, I left quickly and did not mention the incident to anyone. We combed the Internet, reading countless checklists designed to alert parents to behaviors that might point to autism.  We were confused, as our son seemed…