Researchers have found evidence that a genetic quirk previously found to make people more prone to negative emotions also may make them more likely to smile or laugh.
Researchers have found evidence that a genetic quirk previously found to make people more prone to negative emotions also may make them more likely to smile or laugh. Matt Dunham The Associated Press
Researchers have found evidence that a genetic quirk previously found to make people more prone to negative emotions also may make them more likely to smile or laugh. Matt Dunham The Associated Press