E-Mail PITTSBURGH--A smile that lifts the cheeks and crinkles the eyes is thought by many to be truly genuine. But new research at Carnegie Mellon University casts doubt on whether this joyful facial expression necessarily tells others how a person really feels inside. In fact, these "smiling eye" smiles, called Duchenne smiles, seem to be related to smile intensity, rather than acting as an indicator of whether a person is happy or not, said Jeffrey Girard, a former post-doctoral researcher at CMU's Language Technologies Institute. "I do think it's possible that we might be able detect how strongly somebody feels positive emotions based on their smile," said Girard, who joined the psychology faculty at the University of Kansas this past fall. "But it's going to be a bit more complicated than just asking, 'Did their eyes move?'"