the aim of this study is to examine the difference between the introverts and extroverts in preferred advice-giving style. furthermore, it explores the difference between l1 (persian) and l2 (english) regarding the giving of advice for the extroverts and introverts separately. it investigates whether an extrovert or introvert gives advice in the same manner in his l1 (persian) and l2 (english) or performs differently. to achieve the objectives of this study, a total of 100 efl students at shahid chamran university of ahvaz took the michigan test of english language proficiency and based on the scores, 50 top students were selected as participants of the study. they took eyzenk personality inventory and two other advice questionnaires in english and persian language. the results revealed that there is not a strong difference between extroverts and introverts in advice-giving style. furthermore, the results indicated that an introvert or extrovert efl learner does not show any significant difference between his own language and a foreign language when giving advice.