People inherently use experiences of their past while imagining their future, a capability that plays a crucial role in mental health. Resonance is an AI-powered journaling tool designed to augment this ability by offering AI-generated, action-oriented suggestions for future activities based on the user's own past memories. Suggestions are offered when a new memory is logged and are followed by a prompt for the user to imagine carrying out the suggestion. In a two-week randomized controlled study (N=55), we found that using Resonance significantly improved mental health outcomes, reducing the users' PHQ8 scores, a measure of current depression, and increasing their daily positive affect, particularly when they would likely act on the suggestion. Notably, the effectiveness of the suggestions was higher when they were personal, novel, and referenced the user's logged memories. Finally, through open-ended feedback, we discuss the factors that encouraged or hindered the use of the tool.

翻译：人类在想象未来时，天生会运用过去的经验，这种能力对心理健康起着至关重要的作用。共振是一款由人工智能驱动的日记工具，旨在增强这种能力，它基于用户自身的过往记忆，提供由AI生成的、面向行动的未来活动建议。当用户记录新记忆时，系统会提供建议，并随后提示用户想象自己执行该建议的情景。在一项为期两周的随机对照研究（N=55）中，我们发现使用共振显著改善了心理健康结果，降低了用户的PHQ8得分（一种衡量当前抑郁程度的指标），并增加了他们的日常积极情绪，尤其是在用户可能采纳建议的情况下。值得注意的是，当建议具有个性化、新颖性并参考了用户记录的记忆时，其有效性更高。最后，通过开放式反馈，我们探讨了鼓励或阻碍该工具使用的因素。