Watching cat videos online may well have contributed to this general happiness. Participants reported a decrease in negative emotions—annoyance, anxiety, sadness, guilt—after an Internet cat fix, as well an increase in positive emotions (hope, happiness, contentment). Thus, the use of Internet cats as a mood modifier—the Emergency Kitten hypothesis—appears to pan out. As for the motivations behind those procrastinators, Myrick’s data works with her model. Although procrastinators felt guilt after watching videos of cats knocking things off desks when they should have been working, that was more than offset by the pleasure obtained. The effect was also dependent on the quality of the cat content.
Watching cats on the Internet is good for you Jonathan Gitlin @ Ars Technica