Language instructors play a decisive role in adult language learners' learning and retention of vocabulary through planning, selection, and teaching of vocabulary and strategies. However, some professional language schools lack extensive teacher-training programs that prepare instructors with the skills required to select and teach vocabulary,…

Purpose: This study attempts to describe mentors' perceptions of their ethical dilemmas, the derived mentor roles, and the ethical guidelines suggested by mentors, with reference to previous studies exploring the mentors' multifaceted roles. Design/methodology/approach: A total of 60 mentors participated in a two-phase study: the mentors were…