1. Duchenne Smiles as Honest Signals of Chronic Positive Mood. (May 2021) Authors: Sheldon, Kennon M.; Corcoran, Mike; Sheldon, Melanie Journal: Perspectives on psychological science Issue: Volume 16:Number 3(2021) Page Start: 654 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗