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Most of the studies in Interlanguage Pragmatics have focused on the performance and acquisition of speech acts by nonnative speakers, considering politeness only as a subsidiary issue. The present study pertains to linguistic politeness and attempts to investigate the effects of different teaching methods on the acquisition of English politeness strategies (PSs). Eight groups of freshman and junior English majors were randomly assigned to three experimental groups (enhanced input, explicit teaching, and role play) and one control group (mere exposure). The participants took a TOEFL test, a pretest, and finally a posttest after a seven-week treatment of a list of PSs. The results indicated that instruction has a significant positive influence on the acquisition of PSs and explicit teaching is significantly the most effective method. Role play and input enhancement were the second and third most effective. Moreover, it was shown that although the level of language proficiency significantly influenced the knowledge of PSs (the ability to recognize appropriate PSs for each social context), it did not affect the acquisition of PSs. The findings imply that the instruction of PSs can be started at intermediate level and explicit teaching alongside role play activities will greatly benefit language learners.

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The development of different sub-competences of second/foreign language is affected by a variety of cognitive, personal, and social factors (Ellis, 1994). As for personal factors, a wide range of emotional variables have been incorporated into second language acquisition (SLA) studies however, emotional intelligence (EQ) is relatively new to this domain (Pishghadam, 2009). Given that EQ seems to affect EFL learners' interlanguage pragmatic competence (ILP) development due to the face-threatening nature of some of the speech acts involved and in an attempt to explore the nature of the tentative interrelationship, the researcher administered the Bar-On EQ-i (1996) questionnaire as an EQ measure, two ILP competence tests, and a TOEFL test to 52 Iranian EFL majors. The analyses results did not reveal any significant correlation between EQ, ILP competence and general English proficiency despite the evident strong correlation between the ILP and general English proficiency. Furthermore, the results did not feature EQ as an effective predictor of EFL learners' general English proficiency and ILP competence development level. The findings imply that EQ as a seemingly construct irrelevant factor to EFL learners' both foreign language proficiency and ILP development might not be rightly considered as an effective personal variable in EFL educational contexts.