Probing our ability to communicate nonverbally is hardly a new psychological tack; researchers have long documented the complex emotions and desires that our posture, motions, and expressions reveal. Yet until recently, the idea that people can impart and interpret emotional content via another nonverbal modality-touch-seemed iffy, even to researchers, such as DePauw University psychologist Matthew Hertenstein, who study it. In 2009, he demonstrated that we have an innate ability to decode emotions via touch alone. In a series of studies, Hertenstein had volunteers attempt to communicate a list of emotions to a blindfolded stranger solely through touch. The results suggest that for all our caution about touching, we come equipped with an ability to send and receive emotional signals solely by doing so. Participants communicated eight distinct emotions-anger, fear, disgust, love, gratitude, sympathy, happiness, and sadness-with accuracy rates as high as 78 percent. I was surprised," Hertenstein admits. "I thought the accuracy would be at chance level," about 25 percent. "Everywhere we've studied this, people seem able to do it," he says. Indeed, we appear to be wired to interpret the touch of our fellow humans. If touch is a language, it seems we instinctively know how to use it. But apparently it's a skill we take for granted. When asked about it, the subjects in Hertenstein's studies consistently underestimated their ability to communicate via touch-even while their actions suggested that touch may in fact be more versatile than voice, facial expression, and other modalities for expressing emotion. His research shows that touch can communicate multiple positive emotions: joy, love, gratitude, and sympathy.