When we’re angry, or upset, or fearful -- in the grip of any strong emotion -- most of us find it difficult to think clearly. This has to do with the inverse relationship between our sympathetic and parasympathetic nervous systems, which manage (respectively) the degree to which we’re excited or calm. Here, Jones explores these and other neurosocial phenomena through the lens of the immensely popular novels of Jane Austen in her new book, Jane on the Brain: Exploring the Science of Social Intelligence.