Though privileges ascribed to various facets of language learning strategy training have long been espoused with regard to varied language skills and components, the role some individual variables such as emotional intelligence might play in this respect seems to have received very scant attention. The researchers in the current study embarked on a probe into the impact of metacognitive strategy training on Iranian EFL learners' argumentative writing performance, in the light of individuals' emotional intelligence and gender differences. To this end, a total of 69 advanced EFL institute learners were selected as the participants of the research. The experimental group members were, then, treated through the application of O'Malley and Chamot's (1990) CALLA (Cognitive Academic Language Learning Approach) for metacognitive writing strategy training. Moreover, Bar-On's (1997a, 1997b) Emotional Quotient Inventory (EQ-i) was administered to learners to gain insight into their emotional intelligence status. The final analysis of data via running t-test and three-way ANOVA revealed significant differences between the performance of control and experimental groups. Additionally, while gender differences were found to produce significant writing performance differences, disparities in learners' emotional intelligence level didn't significantly affect the degree of gains resulting from metacognitive strategy training.
