As I learn from an article in yesterday's NYT, we may be doing more than expressing emotion when we cry. Our tears, according to striking new research, may be sending chemical signals that influence the behavior of other people. In several experiments, researchers found that men who sniffed drops of women’s emotional tears became less sexually aroused than when they sniffed a neutral saline solution that had been dribbled down women’s cheeks. While the studies were not large, the findings showed up in a variety of ways, including testosterone levels, skin responses, brain imaging and the men’s descriptions of their arousal. The researchers started with women because when they advertised for “volunteers who can cry with ease,” they could not find men who were “good criers,” readily able to fill collection vials. Several experts said the findings — besides potentially adding subtext to crying songs through the ages, from Roy Orbison to the Rolling Stones — could be a first step toward a breakthrough on a mysterious subject.