In a study of college yearbook photos,researchers found that:

Question

Quizplus · Accepted Answer

The correct answer is based on psychological research indicating that genuine smiles, often referred to as Duchenne smiles (involving the muscles around the eyes and mouth), are associated with positive outcomes in life. Studies have shown that people who display genuine smiles in photographs, such as those in yearbooks, are more likely to experience positive social outcomes, including marital stability and personal well-being, compared to those with insincere or "fake" smiles.

In a Study of College Yearbook Photos,researchers Found That