The benefits of dialogic interaction which engenders academic talk are greater understanding of concepts and ultimately higher educational standards. However, recent research suggests students, both home and international, face certain challenges in contributing to dialogic interaction in a higher education context. This article reports on a study which explored learner experiences of dialogic interaction and reasons for contributing or remaining silent. Data were gathered from a one-semester postgraduate module at a UK university through interviews, audio recordings of sessions, stimulated recall sessions and course assignments. Results suggest that sociocultural factors such as confidence in language, confidence in knowledge, previous educational experiences, and expectations of roles influenced the learners' willingness to contribute to the academic talk.