The low I.Q., however, ignores two traits that define Williams more distinctly than do its deficits: an exuberant gregariousness and near-normal language skills. Williams people talk a lot, and they talk with pretty much anyone. They appear to truly lack social fear. Indeed, functional brain scans have shown that the brain’s main fear processor, the amygdala, which in most of us shows heightened activity when we see angry or worried faces, shows no reaction when a person with Williams views such faces. It’s as if they see all faces as friendly.
People with Williams tend to lack not just social fear but also social savvy. Lost on them are many meanings, machinations, ideas and intentions that most of us infer from facial expression, body language, context and stock phrasings. If you’re talking with someone with Williams syndrome and look at your watch and say: “Oh, my, look at the time! Well it’s been awfully nice talking with you . . . ,” your conversational partner may well smile brightly, agree that “this is nice” and ask if you’ve ever gone to Disney World. Because of this — and because many of us feel uneasy with people with cognitive disorders, or for that matter with anyone profoundly unlike us — people with Williams can have trouble deepening relationships. This saddens and frustrates them. They know no strangers but can claim few friends.