Another finding is that people who are married or work together do not have as much of an effect on happiness as friends do.

VOA: special.2009.01.21

Researchers also carried out an experiment to test if signs of disorder that were heard had the same effect as signs that were seen.

VOA: special.2009.03.03

Both Crystal and Jansen point to email as an example of people misunderstanding the Internet's overall effect.

VOA: standard.2010.01.16