Character journaling is a well-established exercise in actor training, but many actors struggle to sustain it due to cognitive burden, the blank page problem, and unclear short-term rewards. We reframe large language models not as co-authors but as maieutic partners-tools that guide reflection through context-aware questioning rather than producing text on behalf of the user. Based on this perspective, we designed Actor's Note, a journaling tool that tailors questions to the script, role, and rehearsal phase while preserving actor agency. We evaluated the system in a 14-day crossover study with 29 actors using surveys, logs, and interviews. Results indicate that the tool reduced entry barriers, supported sustained reflection, and enriched character exploration, with participants describing different benefits when AI was introduced at earlier versus later rehearsal stages. This work contributes empirical insights and design principles for creativity-support tools that sustain reflective practices while preserving artistic immersion in performance training.

翻译：角色日志是演员训练中一项成熟的练习，但许多演员因认知负担、空白页问题及短期回报不明确而难以持续。本研究将大语言模型重新定位为启发式伙伴而非合著者——即通过情境感知提问引导反思，而非代替用户生成文本的工具。基于这一视角，我们设计了“演员笔记”日志工具，该工具可根据剧本、角色和排练阶段定制问题，同时保留演员的自主性。我们通过为期14天的交叉研究对29名演员进行评估，采用问卷调查、日志分析和访谈等方法。结果表明，该工具降低了入门门槛，支持持续性反思，并丰富了角色探索；参与者报告了AI在排练早期与后期介入带来的差异化收益。本研究为创造力支持工具提供了实证见解与设计原则，旨在维持反思性实践的同时，保护表演训练中的艺术沉浸感。