To diagnose psychosis, doctors have long relied on observation and insight. Now they may also be able to rely on specific, empirical biomarkers to guide them in diagnosis and treatment of illnesses such as schizophrenia and bipolar disorder, according to a new study. (KERA)

John Reynolds was the newsletters editor for the Tribune from 2013 to 2017. Prior to that, he was a reporter for Quorum Report, a non-partisan online political newsletter focusing on the ins and outs under...