Happy vs. sad faces Plenty of research backs the rationales for both approaches. She’s happy. Jerald Jackson/Flickr Seeing a smile can make people feel happy.

In the last experiment, 60 undergraduates were shown happy, sad or neutral faces and were asked to memorize them. Here the sad volunteers lost their advantage — all the volunteers performed ...

What becomes a nemesis most?In Green Bay, the news of Packers quarterback Brett Favre's surprise decision to retire after 17 NFL seasons did more than spark a Wisconsin-wide day of mourning.

How did the researchers who manipulatedFacebook's news feed to show users more happy or sad content decide which posts to display? They used a common text-analysis software program called ...

Happy vs. sad faces Plenty of research backs the rationales for both approaches. She’s happy. Flickr/Jerald Jackson, CC BY-SA Seeing a smile can make people feel happy.