- Christmas, New Year's Eve and Valentine's Day are still among the happiest days for all of these nations, and Friday, Saturday and Sunday are happiest days of the week.
- Canadians are happier the day before Canadian Thanksgiving (a Sunday) than on the actual Canadian Thanksgiving Day (a Monday).
- Australia's index was lowest on Feb. 13, 2008â€"the day Prime Minister Kevin Rudd apologized in Parliament to indigenous Australiansâ€"reflecting the 4 percent of Aussie status updates containing the word "sorry."
- Happiness levels in the UK seem to have the least variation, with the fewest large peaks among all the graphs due to holidays.
Originally Published Monday, Oct. 5, 2009
Every day, through Facebook status updates, people share how they feel with those who matter most in their lives. These updates are tiny windows into how people are doing. They're brief, to the point, and descriptive of what's going on this week, today or right now.
Grouped together, these updates are indicative of how we are collectively feeling. At Facebook, we're always looking for ways to help people better understand the world around them, and we're interested in how people express their emotions with one other and the world. So earlier this year, data scientists at Facebook started a project to measure the overall mood of people from the United States on Facebook, based on the sentiment expressed in status updates.
The result was an index that measures how happy people on Facebook are from day-to-day by looking at the number of positive and negative words they're using when updating their status. When people in their status updates use more positive wordsâ€"or fewer negative wordsâ€"then that day as a whole is counted as happier than usual.
Though more countries or languages may be added later, the current result is notable since it is based on the updates of all English-speaking U.S. Facebook users. In this sense, it can count as an indicator of "Gross National Happiness," a metric only measured currently via Gallup polls and national surveys in countries such as France and Bhutan. To protect your privacy, no one at Facebook actually reads the status updates in the process of doing this research; instead, our computers do the word counting after all personally identifiable information has been removed.
For our Gross National Happiness index, we adapted a collection of positive and negative emotion words built by social psychologists. Examples of positive or happy words include "happy," "yay" and "awesome," while negative, or unhappy words, include "sad," "doubt" and "tragic." We also did a brief survey of some Facebook users, which showed that people who use more positive words, relative to the number of negative words, reported higher satisfaction with their lives.
Over time, we've seen spikes in the index for different days of the year. Some of the happiest days include U.S. national holidays like Thanksgiving and Fourth of July, social holidays like Halloween and religious holidays including Christmas and Easter. Wednesday, Nov. 5, 2008â€"when the U.S. was celebrating the election of President Barack Obamaâ€"was over twice as happy as the average Wednesday.
It's not all rosy, though: The index also shows two remarkably unhappy days. The lowest was Jan. 22, 2008, which was the day the Asian stock market crashed and coincidentally the same day as the tragic death of actor Heath Ledger. The recent death of cultural icon Michael Jackson on June 25, 2009, came in as the second least happy day in the past two years.
How happy will all of us be tomorrow, on our birthdays or during the World Cup? It depends on you and what you decide to share about how you're feeling with your friends through your status updates.
Adam, a Ph.D. student in social psychology at the University of Oregon and an intern on Facebook's data team, is 72 percent happier than the average person on Facebook.
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