Eli is quiet and seems to be listening intently. Then he gets angry and lashes out, just when the person talking with him thinks things are going well. His anger seems unprovoked and unanticipated. Just a second ago he was a very engaged, calm, super cute 12-year-old. Then, in the blink of an eye, he is frustrated, hitting himself, calling himself dumb. Sometimes he strikes out at those around him.…