This study examined the relationship between affective factors (motivation, anxiety, extraversion) and oral proficiency/academic achievement in EFL students. It used a quantitative, correlational design with surveys to measure the affective factors and background questionnaires. 243 students participated. Results found motivation positively correlated with oral proficiency and academic achievement, while anxiety negatively correlated with oral proficiency. No relationship was found between extraversion and the outcomes. The researcher chose this design to test hypotheses about relationships between variables.