In a controlled experiment, a researcher at the University of California at Riverside, U.S.A., asked her subjects to keep a “gratitude journal ” ​ — a diary of things for which they were thankful.
Dalam sebuah percobaan yang saksama, seorang peneliti di University of California di Riverside, AS, meminta subjeknya membuat ” jurnal terima kasih ” ​ — buku harian untuk mencatat hal - hal yang mereka syukuri.