Lost your spark? The "silent sister" of depression, and a quiz to spot her

Always busy, but rarely joyful? Allison Aubrey and Juana Summers discuss a tool to spot "high functioning depression."

<img src='https://npr.brightspotcdn.com/dims3/default/strip/false/crop/7843x5000+0+0/resize/7843x5000!/quality/85/format/webp/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Fe0%2F8b%2F3aa3d12341a78636a49ef4c1af2d%2Fgettyimages-1210344576.jpg' alt='Getty Images'/><p>Always busy, but rarely joyful? Allison Aubrey and Juana Summers discuss a tool to spot "high functioning depression."</p><p>(Image credit: Getty Images)</p><img src='https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5996687' />