Quantum teaching method (QTM), a student-centred model of education, which provides the possibility for the integrated use of a combination of learning theories, has not received adequate attention in EFL teaching. This study, adopting an explanatory mixed-methods design, aimed at examining the effect of QTM on EFL learners’ writing motivation. The participants comprised 78 pre-intermediate EFL learners who were placed into two groups based on convenience sampling procedures. The first group was assigned as the experimental group and another group as the control group. A writing motivation questionnaire (WMQ) was administered to both groups as pretest. Next, the experimental group was exposed to QTM for writing instruction while the control group received conventional writing instruction. After treatment, both groups took the WMQ as posttest. Moreover, 15 participants from the experimental group took part in semi-structured interviews. The results of Mann-Whitney U Test indicated the significantly positive impact of QTM on writing motivation. The results of qualitative analysis revealed five themes including satisfaction, enjoyment, engagement, personalization, and lowering anxiety as the factors improving writing motivation. Based on the results, EFL teachers are encouraged to employ QTM to enhance learners’ writing motivation.
