For example, a study by Dr. Matthew Hertenstein and colleagues at DePauw University about the relationship (if any) between smiles and marriage.
The Economist wrote,
Hertenstein was following up research which had shown that the women who smiled most in their college photos were most likely to be married by the age of 27, among other things. He wanted to see if the same held, over the longer term, for divorce. His study, to be published in Motivation & Emotion, looked at three groups. The first, of 306 people, came from alumni of the psychology department. The second group, of 349, was recruited from general alumni. The third, of 55 people, was recruited from the town. (In the last case, people were asked to send in photos of themselves, but were not told that the study was about smiling.) The researchers rated the photos of the subjects on a scale of two to ten. They also asked their volunteers various questions, including whether they had ever been divorced.What I found particularly interesting was the article's quiet nod to Malcolm Gladwell's Blink: The Power of Thinking Without Thinking and its popularization of the concept of thin-slicing:
The relationship between smiling and divorce also held up among townspeople, even though many sent photographs of themselves as children. Facial expression predicted divorce even when the smile or frown was on a ten-year-old’s
face. . . .
The results should not be overstretched. The never-divorced had their smiles rated on average at 5.9, 5.9 and 5.2 out of 10 in each of the three groups, while the divorced scored 5, 5.3 and 4.4. That is not a huge difference, but it is statistically significant. On the other hand, comparing only the lowest-scoring people with the highest-scoring, the least-smiling were three times more likely than the biggest smilers to divorce.
Until the findings are replicated it is probably too early to choose a spouse based on a facial expression in a photo. On the other hand, it would not hurt to smile for the camera yourself.
This research is a dramatic example of how “thin slices” of information can predict important aspects of people’s personalities. In past studies, researchers have shown that with very limited information—less than half a minute of interaction, the viewing of a video clip or just a look at a photograph—people can make accurate predictions about others’ sexual orientation, socioeconomic status, teaching ability andAnd yet
personality. . . .
A photograph that records a split second from a lifetime is a very thin slice indeed.
Pretty amazing, hunh?