高齡者需面對生命晚期的各種失落，也會內化充斥在社會中對老年人的負向看法，這些都會損及高齡者的幸福感。本研究站在高齡者偏好正向情緒的特性上，透過再經驗感恩作業來提升高齡者幸福感。75位55歲以上的高齡者被分派至以下四組：回憶書寫近日生活中的感恩事件（日常感恩組）、回憶書寫過去生命裡的感恩事件（人生感恩組），及做為對照組之回憶書寫近日生活中的重要事件（日常要事組）、僅單純回答問卷（無操弄控制組）。分析經過七週的書寫歷程後，參與者在感恩情緒、正向情緒等量表上的得分變化情形，發現：相較於無操弄控制組的高齡者，書寫日常感恩事件的高齡者表現顯著的正向情緒提升，其效果乃透過感恩情緒中介而成，此意味著：只要引導高齡者留意日常生活中的感恩事件，讓他們感受更多的感恩情緒，將有助其面對晚年的處境，讓幸福感得以維繫。然而，人生感恩組未如預期提升幸福感，日常要事組卻意外具有效果，研究者深入分析實驗資料對此不一致提出解釋。最後，說明本研究結果可如何應用在高齡教育上。

The elderly experiencing all kind of loses in their advanced stage of life, and internalizing the widespread negative views toward their age group at large, compromise their subjective well-being. In this study, based on the elderly’s preference for positive emotions, a re-experiencing gratitude intervention was designed to enhance the subjective well-being of the elderly. 75 elderly people over the age of 55 were assigned to one of the following four groups: Daily Gratitude Group, to write down their grateful experiences from their daily life; Life Gratitude Group, to recall those grateful events happened in their past; Daily Importance Control Group, to record their daily important events; No Treatment Control Group, only to fill up a questionnaire. Analyzing change scores on the grateful emotion, positive emotion etc. scales after seven weeks of writing, the positive emotions of Daily Gratitude Group were enhanced, compared with that of No Treatment Control Group, and this effect was mediated by grateful emotions. It is revealed that, just prompting the elderly to pay more attention to their daily grateful events makes them experience more grateful emotions, and it helps them face up to negative situations in their late years and maintains their subjective well-being. However, Life Gratitude Group was not expected to enhance the subjective well-being, but Daily Importance Control Group was unexpectedly to enhance it, the researcher also explained these effects through experimental data. Finally, it also explains how the results of this study are applied to senior education.