Doctors Say Mental Health Tests May Not Be Very Reliable

Scientists have discovered that the interviews doctors use to diagnose mental health problems might not be as reliable as everyone thinks. These interviews are the main way doctors figure out if someone has depression, anxiety, or other mental health conditions. A new study shows that these tests don't always give the same answer when given twice to the same person. The research looked at how well these interviews work for different types of mental health problems.

Dr. Laura Duncan is a psychiatry professor at McMaster University in Canada who helped write this study. She says doctors often think these interviews are the "gold standard" for diagnosing mental health problems. However, her research shows that these interviews don't always work as well as doctors hope they do. The study found that some mental health conditions are much easier to diagnose reliably than others.

The researchers discovered that substance use disorders had the best reliability scores of all the conditions they studied. This means that if someone has a problem with drugs or alcohol, the interview is more likely to give the same result both times. Duncan explained that this happens because the questions focus on specific behaviors that people can remember more clearly. For example, it's easier to count how many drinks someone had in a week than to remember how many days they felt sad.