英語讀者劇場比賽是台灣各縣市政府很重視的英語比賽之一。此賽事提供學童展現學習成效與提升未來語言學習動機。國小學童在讀者劇場比賽前通常會接受密集訓練。然而，這些參賽者在培訓過程中的動機轉變及其影響因素卻未有深入探討。本研究調查影響學童比賽培訓過程中動機的因素。四位參賽者因其受訓參賽經驗參加本研究。藉由分析訪談、觀察記錄、省思心得等資料，研究結果發現影響學童動機的因素來自重要他人的回饋（老師及同儕）、個人表現監控機制、受中華文化影響之集體主義心態；此外，追求個人卓越表現及避免犯錯的策略使參賽者得以達成共同目標。上述所有因素交互影響參賽者的動機。本研究亦提供建議，以供教育學者於未來培訓比賽選手時運用。

Readers’ theatre (RT) contests provide a platform for learners to demonstrate the results of their education and to promote language learning. At the elementary school level, young learners often receive intense training before attending a RT contest. However, the contest participants’ motivation changes during the training and the affecting factors are often neglected. This study investigates the factors that influence young learners’ motivations in RT contest training. Four contestants of an RT contest were selected based on their contest attending experience and ability to express themselves. Data were collected and analyzed through interviews, reflection journals, and observation. Results show that contest participants’ motivation is affected by feedback from significant others (teachers and peers), the monitoring of one’s personal performance, and the collectivist mindset of Chinese culture. Moreover, the pursuit of personal excellence and failure avoiding strategies enable the participants to achieve the shared goal of the team. The aforementioned factors intertwined with one another and became a great impact on their motivation. Pedagogical implications for educators wishing to train learners in future contests are provided.