Research Background: In any successful education system, teachers as the main driving forces of the learning process are at the forefront. To fulfill their responsibilities efficiently, they need to enhance their knowledge and professional expertise. Hence, the evaluation of teachers’ professional development is of paramount importance in EFL contexts.Purpose of the Study: In line with such a concern, the present study was conducted to investigate the underlying factors constituting a newly developed teachers’ professional development questionnaire in the EFL context of Iran.Methods: To this end, 242 Iranian EFL teachers with different experiences were conveniently requested to partake in this study. They were asked to respond to the questionnaire, which encompassed 76 items on a five-point Likert scale. After ensuring the reliability of the scale, to scrutinize the validity of the questionnaire, content validity and factor analysis were checked.Results: The results of Exploratory Factor Analysis (EFA) revealed that the questionnaire involved 7 factors, representing the teachers’ beliefs about various aspects of development, like means of development, needs, beneficiaries, motivators, methods, and obstacles of development. The results of Confirmatory Factor Analysis (CFA) also demonstrated that the questionnaire consists of seven factors, loading on items and sub-components of the model.Implications: This study can provide treasured pedagogical implications for EFL teachers, teacher educators, policymakers, and materials developers through raising their awareness and knowledge of teachers’ professional development and its underlying components.

中文翻译：

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开发和验证专业发展清单：重点关注新手和经验丰富的教师的看法

研究背景：在任何成功的教育体系中，教师作为学习过程的主要驱动力都处于最前沿。为了有效地履行职责，他们需要提高自己的知识和专业知识。因此，教师专业发展的评估在英语语言环境中至关重要。 研究目的：本着这样的担忧，本研究旨在调查构成新开发的教师专业发展问卷的潜在因素。伊朗外语背景。方法：为此，方便地邀请了242名具有不同经验的伊朗外语教师参与本研究。他们被要求回答问卷，问卷包括 76 个项目，采用李克特五点量表。在保证秤的可靠性后，检验问卷的有效性、内容有效性和因素分析。结果：探索性因素分析（EFA）的结果显示，问卷涉及7个因素，代表了教师对发展的各个方面的信念，如发展方式、需求、受益者、动机、方法和发展障碍。验证性因素分析 (CFA) 的结果还表明，问卷由七个因素组成，加载在模型的项目和子组件上。启示：本研究可以为 EFL 教师、教师教育者、政策制定者和材料提供宝贵的教学意义开发人员通过提高他们对教师专业发展及其基本组成部分的认识和知识。