Abstract
PURPOSE: Lecture-based teaching is widely used in preclinical medical education, offering a systematic way to deliver complex information efficiently. However, its effectiveness heavily relies on the instructional behaviors of lecturers. Despite its importance, limited research has explored the specific differences between effective and ineffective teaching behaviors perceived by students. This study aims to analyze these behaviors systematically to provide actionable insights for enhancing teaching competencies. METHODS: This study surveyed 92 first-year medical students to evaluate effective and ineffective teaching behaviors. A 30-item questionnaire was developed based on existing literature. Data analysis included descriptive statistics to rank teaching behaviors and chi-square tests to examine their correlations. RESULTS: Effective behaviors included appropriate voice volume, clear pronunciation, error-free lecture materials, clear explanations of learning objectives, and humor. Ineffective behaviors were poor voice clarity, insufficient summarization, lack of follow-up session introductions, absence of online resources, and poor interaction. Significant relationships between effective and ineffective behaviors were observed in some items. CONCLUSION: The study highlights those effective behaviors, such as recalling prior learning, utilizing materials, and engaging students, enhance learning outcomes. Faculty development should focus on avoiding ineffective behaviors for novice faculty and reinforcing effective ones for mid-career faculty to improve teaching quality in medical education.