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 Aly, I., & Islam, M. (2005). Factors affecting oral communication apprehension among business students: An empirical study. The journal of American academy of business, 2, 98-103.
 Borzi, M. G., & Mills, T. H. (2001). Communication apprehension in upper level accounting students: An assessment of skill development. Journal of Education for Business, 76(4), 193-198.DOI: 10.1080/08832320109601310
 Armstrong, M., & Boud, D. (1983). Assessing participation in discussion: An exploration of the issues. Studies in Higher Education, 8(1), 33-44.DOI: 10.1080/03075078312331379101
 Cohen, M. (1991). Making class participation a reality, , Political Science and Politics, Vol 24, No. 4, pp.699-703.
 Crone , J. A. (1997) Using panel debates to increase student involvement in the introductory sociology class . Teaching Sociology, 25, 214-218.DOI: 10.2307/1319397
 Cupach, W. R., & Carson, C. L. (2002). Characteristics and consequences of interpersonal complaints associated with perceived face threat. Journal of Social and Personal Relationships, 19(4), 443-462.DOI: 10.1177/0265407502019004047
 Daly, J. A. & Miller M.D. (1975). Further studies in writing apprehension: SAT scores, success expectations, willingness to take advanced courses, and sex diiferences. Research in the Teaching of English , 9(3), 250-256.
 Elias, R. Z. (1999). An examination of nontraditional accounting students' communication apprehension and ambiguity tolerance. Journal of education for business, 75(1), 38-41.DOI: 10.1080/08832329909598988
 Fassinger, P. A. (1995). Understanding classroom interaction. The Journal of Higher Education, 66, 82-96.
 Fritschner, L. M. (2000). Inside the undergraduate college classroom: Faculty and students differ on the meaning of student participation. The Journal of Higher Education, 71, 342-362.DOI: 10.1080/00221546.2000.11780826
 Girgin, K. Z., & Stevens, D. D. (2005). Bridging in-class participation with innovative instruction: Use and implications in a Turkish university classroom. Innovations in Education and Teaching International, 42, 93-106.DOI: 10.1080/14703290500049059
 Gleason, M. (1986). Better communication in large classes. College Teaching, 34, 20-24.
 Handelsman, M. M., Briggs, W. L., Sullivan, N., & Towler, A. (2005). A measure of college student course engagement. The Journal of Educational Research, 98, 184-191. (ES).
 Hassal, T., Joice, J., Ottewill, R., Aequero, J., & Donso, J. (2002). Communication apprehension in UK and spanish business and accounting students. Education & Training, 42, 93-100.DOI: 10.1108/eum0000000005351
 Howard, J. R., & Henney, A. L. (1998). Student participation and instructor gender in the mixed-age college classroom. The Journal of Higher Education, 73, 764-780.DOI: 10.2307/2649271
 Howard, J. R., Short, L. B., & Clark, S. M. (1996). Students' participation in the mixed -age college classroom. Teaching sociology, 24, 8-24.DOI: 10.2307/1318894
 Hyde, C. A., & Ruth, B.J. (2002). Multicultural content and class participation: Do students self-disclose? Journal of Social Work Education, 38, 241-256.
 Johnson, L., & Faunce, R. W. (1973). Minneapolis Secondary School Students' Attitudes Toward School by Achievement, Race, and Sex.
 Junn, E. (1994) . Pearls of wisdom: Enhancing student class participation with an innovative exercise . Journal of Instructional Psychology, 21, 385-387.
 Karp, D. A., & Yoels, W. C. (1976). The college classroom : some observations on the meanings of student participation. Sociology and Social Research, 60, 421-439.
 Kuh, G. D., & Umbach , P.D. (2004). College and character: Insights from the National Survey of Student Engagement. New Directions for Institutional Research , 122, 37-54.DOI: 10.1002/ir.108
 Lin, Y., & Rancer, A. S. (2003).
 Lyons, P. R. (1989). Assesing classroom participation College Teaching, 37, 36-38.
 McCroskey, J. C., (1984). The communication apprehension perspective. In J. A. Daly and J.C. McCroskey, Avoiding communication: Shyness, reticence, and communication apprehnsion, pp.13-38. Beverly Hills, CA: Sage.
 Myers, S. A., Horan, S. M., Kennedy-lightsey, C. D., Madlock, P. E., Sidelinger, R. J., Byrnes, K., Frisby, B., & Mansson, D. H. (2009).
 Na, Z. (2007). A study of high school students' English learning anxiety. Iranian EFL Journal, 9(3), 22-34.
 Neer, M. R. (1987). The development of an instrument to measure classroom apprehension. Communication Education, 36(2), 154-166.DOI: 10.1080/03634528709378656
 Petress, K. (2006). An operational defenition of class participation. College Student Journal, 40 , 821-823.
 Rashidi, N. (2010). On the relationship between efl learners'oral communication apprehension and personality traits. Annales Universitatis Apulensis. Series Philologica, (11/4), 233-255.
 Wade, R. (1994). Teacher education students'views on classroom discussion: Implications for fostering critical reflection . Teaching and teacher education, 10, 231-243.DOI: 10.1016/0742-051x(94)90015-9
 Weaver, R. R., & Qi, J. (2005). classroom organization and participation: college students' perception. The Journal of Higher Education, 76, 570-601. ( Received 04 February 2015; accepted 14 February 2015 ).