You might be interested in the results from this study by the Online Privacy Foundation and Kaggle into whether Twitter can be used to detect some of these traits in individuals and groups:<p><a href="https://www.onlineprivacyfoundation.org/twitter-psychopathyexperiment-results/" rel="nofollow">https://www.onlineprivacyfoundation.org/twitter-psychopathye...</a><p>I'd imagine Facebook/Google could also possibly have explored similar analysis internally and/or as research partnerships, and they should have much richer data.