Facebook’s psychological study ends up testing users’ trust

Aired: 7/1/2014 | 0:07:10 | Clip
Many Facebook users were upset by news that the social media network manipulated incoming content for hundreds of thousands of people without telling them. The manipulation was conduction for a study -- published in a respected scientific journal -- measuring how attitudes were affected by either positive or negative posts. Judy Woodruff learns more from Reed Albergotti of The Wall Street Journal.