ar: عن طريق قياس إبتساماتهم وكان الباحثون قادرون على ان يتوقعوا نجاح وبقاء زواج كل من الطلاب وكم سوف يحققتحقق الشخص المعني
en: 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.