Facebook language used to predict depression among users ahead of diagnosis

A group of researchers from Princeton University conducted a study that showed how Facebook can be used to predict depression among its users ahead of first diagnosis. This was done by analyzing the language used in Facebook posts.
According to the study, which was published on the Proceedings of the National Academy of Sciences of the United States of America Journal last Oct. 15, language that is predictive of depression includes references to typical symptoms such as sadness, loneliness, hostility, ru