Single-event volunteering, one form of episodic volunteering, is increasingly common. To gain a deeper understanding of this phenomenon, this study used self-determination theory to explore the motivations and communication experiences of volunteers for a 1-day volunteer event. Data were collected from 294 volunteers on a questionnaire containing open-ended questions (qualitative) and scaled items (quantitative). Results from the analysis indicated increased feelings of autonomy, competence, relatedness, and purpose, along with reduced feelings of pressure to participate, were associated with increased motivation to volunteer during the recruitment process. Higher levels of motivation, along with positive communication with leaders and peers, resulted in higher levels of satisfaction and likelihood of volunteering again. These results provide evidence for expanding SDT to develop a model of volunteering that includes additional motivations and communication, and provide practical advice for leaders of volunteers.

单一事件志愿服务是一种形式的插曲志愿服务，越来越普遍。为了更深入地了解这一现象，本研究使用自我决定理论来探讨志愿者参加为期 1 天的志愿者活动的动机和交流经验。数据是从 294 名志愿者那里收集的，问卷包含开放式问题（定性）和量表项目（定量）。分析结果表明，自主性、能力、相关性和目标感的增加以及参与压力的减少与招募过程中志愿服务的积极性增加有关。更高水平的动机，以及与领导者和同龄人的积极沟通，导致更高水平的满意度和再次志愿服务的可能性。