Depressed patients don’t enunciate vowels as much as people who aren’t depressed. Suicidal individuals who speak in a breathy voice rather than a tense tone are more likely to re-attempt suicide. And patients with psychotic disorders, such as one form of schizophrenia, raise their eyebrows often when averting their gaze. These are among the behavioral biomarkers researchers have established using facial and acoustic analysis. With technology, they measure shifts not always discernible to the eye or...

Source: Wall Street Journal April 01, 2019 15:04 UTC