"When we use pharmaceuticals, they don't mysteriously go away, " said Jerker Fick, a co-author of the study.

WSJ: Anxiety Drug in Rivers Affects Fish Behavior

To induce sadness in the lab, he used video clips from the 1979 tear-jerker, "The Champ, " a widely accepted practice among psychologists.

WSJ: Interesting Fact: There's a Yawning Need for Boring Professors

Netflix decided that the Video Privacy Protection Act stands in the way of its letting user share with the world every blockbuster, romcom, tear-jerker and T.

FORBES: Court Case Spells Trouble for Frictionless Sharing of Videos on Facebook