The disorder, considered a form of autism, is characterized by unusual social interaction and communication skills. Aspies, as people with the condition like to call themselves, often have normal or above-average intelligence, but they have trouble making friends and lack the intuitive ability to gauge social situations. They fail to make eye contact and often exhibit a single-minded fixation that can be both bizarre and brilliant. By definition, people with Asperger’s are outside the mainstream. Even so, in recent months the syndrome has been cast into the limelight. “Look Me in the Eye,†a memoir about living with Asperger’s by John Elder Robison, who once created special effects for the rock band Kiss, has been a best-seller. In August, the Pulitzer Prize-winning music critic Tim Page wrote a poignant article for The New Yorker about life with undiagnosed Asperger’s.