عن طريق قياس إبتساماتهم وكان الباحثون قادرون على ان يتوقعوا نجاح وبقاء زواج كل من الطلاب وكم سوف يحققتحقق الشخص المعني
By measuring the students' smiles, researchers were able to predict  how well she would score on standardized tests of well-being, and how inspiring she would be to others.