Research article    |    Open Access
Base for Electronic Educational Sciences 2026, Vol. 7(1) 36-63

Factors Affecting Foreign Language Anxiety Levels Among University Students

Hazan Zorlu Aslan, Emre Toprak

pp. 36 - 63

Publish Date: March 30, 2026  |   Single/Total View: 0/0   |   Single/Total Download: 0/0


Abstract

The study aims to determine the significance of variables that effectively classify university students’ foreign language anxiety levels. For this purpose, data were collected from 1121 students studying in two metropolitan cities in Central Anatolia during the 2018-2019 academic year. The research is a correlational research type, with a predictive correlation method. The Foreign Language Anxiety Scale was used to determine the anxiety levels of the students. The predictor variables used in the classification of foreign language anxiety were English self-confidence, school climate, attitude towards English course, English self-efficacy, value given to English course, interest in English course, English course motivation, mother’s education status, father’s education status, family income status, gender, grade, and school type. Data analysis was conducted using SPSS. 70% of the data set in the analyses was selected as the training sample and 30% as the test sample. In the data analysis, 100 different artificial neural network models were established for each sub-dimension, and the average significance of each variable in classifying the relevant dimension was calculated across 100 different models to create an importance ranking of the variables. According to the findings obtained from the research, it was determined that the variable with the highest effect on classifying students’ foreign language speaking anxiety levels was English self-confidence, while the variable with the lowest effect was grade level; that the variable with the highest effect on classifying the level of negative evaluation anxiety in foreign language was English self-confidence, while the variable with the lowest effect was grade level; and that the variable with the highest effect on classifying the level of foreign language test anxiety was school type, while the variable with the lowest effect was English self-confidence. The accuracy level of the classifications ranged from 79.00% to 92.92%.

Keywords: Foreign language anxiety, university students, artificial neural networks, classification


How to Cite this Article?

APA 7th edition
Aslan, H.Z., & Toprak, E. (2026). Factors Affecting Foreign Language Anxiety Levels Among University Students. Base for Electronic Educational Sciences, 7(1), 36-63.

Harvard
Aslan, H. and Toprak, E. (2026). Factors Affecting Foreign Language Anxiety Levels Among University Students. Base for Electronic Educational Sciences, 7(1), pp. 36-63.

Chicago 16th edition
Aslan, Hazan Zorlu and Emre Toprak (2026). "Factors Affecting Foreign Language Anxiety Levels Among University Students". Base for Electronic Educational Sciences 7 (1):36-63.

References

    Akpur, U. (2005). Öğrenilmiş çaresizlik ve kaygı düzeylerinin İngilizce başarı düzeyine etkisi. Unpublished Master’s Thesis, Yıldız Teknik Üniversitesi, İstanbul.

    Anning, A. (1998). Teachers’ theories about children’s learning. Calderhead, J. (Ed.), Teachers’ professional development. Falmer Press.

    Anyadubalu, C. C. (2010). Self-efficacy, anxiety, and performance in the English among middle-school students in English language program in Satri Si School, Bangkok. International Journal of Social Sciences, 5(3), 193-198.

    Atasayar, A. (2019). İlköğretim LGS fen bilimleri başarısının yapay sinir ağları ile tahmin edilmesi. Unpublished Master’s Thesis. Kütahya Dumlupınar Üniversitesi, Kütahya.

    Avcı, Ö. (2008). An experimental study on reducing language anxiety in speaking classes through rational-emotive behavioural techniques with reference to emotional intelligence Unpublished Master’s Thesis. Karadeniz Technical University, Trabzon.

    Awan, R. N., Azher, M., Anwar, M. N., & Naz, A. (2010). An investigation of language classroom anxiety and its relationship with students‟achievement. Journal of College Teaching & Learning, 7(11), 33-40.

    Aydın, B. (1999). A Study of the sources of foreign language classroom anxiety in speaking and writing classes (Unpublished Doctoral Thesis). Anadolu University Eskişehir.

    Aydın. S. (2013). Factors affecting the level of test anxiety among EFL learners at elementary schools. E-İnternational Journal Of Educational Research, 4(1), 63-81.

    Aydın, S., & Takkaç, M. (2007). The relationship between gender and test anxiety among ESL learners. Journal of Graduate School of Social Sciences of Ataturk University, 9(1), 259-266.

    Aydın, S., & Zengin, B. (2008). Yabancı dil öğreniminde kaygı: Bir literatür özeti. Journal of Language and Linguistic Studies, 4(1), 81-94.

    Bailey, P., Onwuegbuzie, A.J., & Daley, C.E. (2000). Correlates of anxiety at three stages of the foreign language learning process. Journal of Language and Social Psychology, 19, 474-490.

    Balemir, S. H. (2009). The sources of foreign language speaking anxiety and the relationship between proficiency level and degree of foreign language speaking anxiet Unpublished Master’s Thesis. Bilkent University, Ankara.

    Bandura, A. (1994). Self-Efficacy. In V. S. Ramachaudran (Ed.), Encyclopedia of human behavior (pp. 71-81) Academic Press.

    Bandura, A. (1997). Self-efficacy: The exercise of control. Freeman.

    Baş, G. (2012). İlköğretim İngilizce dersine yönelik tutum ölçeği: Geçerlik ve güvenirlik çalışması. International Online Journal of Educational Sciences, 4(2), 411-424.

    Batumlu, Z. D. (2006). YTÜ yabancı diller yüksek okulu hazırlık öğrencilerinin yabancı dil kaygılarının İngilizce başarılarına etkisi. Yayınlanmamış Yüksek Lisans Tezi. Yıldız Teknik Üniversitesi, İstanbul.

    Batumlu, Z. D., & Erden, M. (2007). Yıldız Teknik Üniversitesi Yabancı Diller Yüksek Okulu hazırlık öğrencilerinin yabancı dil kaygıları ile İngilizce başarıları arasındaki ilişki. Eğitimde Kuram ve Uygulama, 3(1), 24-38.

    Berger, R., & Shechter, Y. (1996), Guidelines for choosing an "intervention package" for working with adolescent girls in distress. Adolescence, 31(123), 709-719.

    Boydak, A. (2008). Öğrenme stilleri. (2. Baskı). Beyaz Yayınları.

    Bradford, A. (2007). Motivational orientations in under-researched FLL contexts: Finding from Indonesia. RELC Journal, 38(302).

    Brown, H. D. (1994). Principles of language learning and teaching. White Plains, Pearson Longman.

    Cao, Q. (2011). The Language of Soft Power: Mediating Socio-Political Meanings in the Chinese Media. Critical Arts: South-North Cultural and Media Studies, 25(1).

    Chang, W. Y. (2010). Taiwanese elementary students’ motivation and attitudes toward learning English in English Village Program in Kaohsiung County Unpublished Doctoral Thesis) (UMI No. 3437606).

    Chastain, K. (1975). Affective and ability factors in second language acquisition. Language Learning, 25, 153-161.

    Chen, T. Y., & Chang, G. B. Y. (2004). The relationship between foreign language anxiety and learning difficulties. Foreign Language Annals, 37(2), 279-289.

    Clément, R., Dörnyei, Z., Noels, K. A. (1994). Motivation, self-confidence, and group cohesion in the foreign language classroom. Language Learning, 44(3), 417-448.

    Cohen, J., Pickeral, T., & McCloskey, M. (2009). Assessing school climate. Education Digest, 74(8), 45-48.

    Creemers, B.P.M., & Reezigt, G.J. (1999). The role of school and classroom climate in elementary school learning environments. In H. J. Freiberg, (Ed.), School climate: Measuring, improving and sustaining healthy learning environments (pp. 107-135). Falmer.

    Çekirdek, G. (2014). Hazırlık sınıfı öğrencilerinin İngilizce başarılarını etkileyen bazı faktörlerin incelenmesi, Unpublished Master’s Thesis. Osmangazi Üniversitesi, Eskişehir.

    Çelebi, S. (2009). Teachers and students’ views on anxiety in English classrooms and attitudes towards English (Unpublished Doctoral Thesis). Çukurova University, Adana.

    Çırak, G. (2012). Yükseköğretimde öğrenci başarılarının sınıflandırılmasında yapay sinir ağları ve lojistik regresyon yöntemlerinin kullanılması. Unpublished Master’s Thesis. Ankara Üniversitesi, Ankara.

    Çolak, A. (2008). Attitudes, motivation and study habits of English language learners: The case of Başkent University second-year students Unpublished Master’s Thesis. Middle East Technical University, Ankara.

    Dalkılıç, N. (2001). An investigation into the role of anxiety in second language learning. Unpublished Doctoral Thesis, Çukurova Üniversitesi, Adana.

    Daly, J. A., Kreiser, P. O., & Rogharr, L. A. (1994), Question-asking comfort: Explorations of the demography of communication in the eighth-grade classroom. Communication Education, 43, 27-41.

    Darling-Hammond, L. (1997). The quality of teaching matters most. Journal of Staff Development, 18(1), 38-41.

    Dewaele, J.-M., & Furnham, A. (2000). Personality and speech production: A pilot study of second language learners. Personality and Individual Differences, 28(2), 355-365.

    Deci, E. L. & Ryan. (1985). Intrinsic motivation and self-determination in human behavior. Plenum.

    Demir, T. (2011). İlköğretim öğrencilerinin yaratıcı yazma becerileri ile yazma özyeterlik algısı ve başarı amaç yönelimi türleri ilişkisinin değerlendirilmesi, Yayınlanmamış Doktora Tezi. Gazi Üniversitesi, Ankara.

    Dorde, K. (2008). TIMSS 2003: Relating dimensions of mathematics attitude to mathematics achievement. Zbornik Instituta za Pedagoška Istraživanja, 40(2), 327-346.

    Dörnyei, Z. (1998). Motivation in second and foreign language learning. Language Teaching, 31, 117-135.

    Ehrman, M. & Oxford, R. (1990). Adult language learning styles and strategies in an intensive training setting. The Modern Language Journal, 74, 311-327.

    Ehrman, M. & Oxford, R. (1995). Cognition plus: Correlates of language learning success. The Modern Language Journal, 79, 67-89.

    Emeksiz, B. (2006). Yabancı dil (İngilizce) öğretiminde güdülenme (motivasyon) ölçümü Unpublished Master’s Thesis. Marmara Üniversitesi, İstanbul.

    Fraenkel, J. R., Wallen, N., & Hyun, H. (2015). How to Design and Evaluate Research in Education. McGraw Hill.

    Frantzen, D., & Magnan S. S. (2005). Anxiety and the true-beginner false-beginner dynamic in beginning French and Spanish classes. Foreign Language Annals, 38, 171-190.

    Gardner, R. C., Tremblay, P. F., & Masgoret, A. M. (1997). Towards a full model of second language learning: An empirical investigation. The Modern Language Journal, 81(3), 344-362.

    Gonzalez, J. M. B., & DesJardins, S. L. (2002). Artificial neural networks: A new approach to predicting application behavior. Research In Higher Education, 43(2), 235-258.

    Gregersen, T. S. (2003). To err is human: A reminder to teachers of language-anxious students. Foreign Language Annals, 36(1), 25-32.

    Gülsün, R. (1997). An analysis of the relationship between learners’ foreign language classroom anxiety and achievement in learning English as a foreign language in the freshman classes at the university of Gaziantep. Unpublished Master’s Thesis, Gaziantep Üniversitesi, Gaziantep.

    Güneri, N., & Apaydın, A. (2004). Öğrenci başarılarının sınıflandırılmasında lojistik regresyon analizi ve sinir ağları yaklaşımı. GÜ Ticaret ve Turizm Eğitim Fakültesi Dergisi, 1, 170-188.

    Harmer, J. (2001). The practice of English language teaching. Harlow: Pearson Longman.

    Hismanoğlu, M. (2013). Foreign language anxiety of English language teacher candidates: A sample from Turkey. Procedia Social and Behavioral Science, 93, 930-937.

    Horwitz, E. K. (1986). Preliminary evidence for the reliability and validity of a foreign language anxiety scale. TESOL Quarterly, 20(3), 559-562.

    Horwitz, E. K., Horwitz, M. B., & Cope, J. A. (1986). Foreign language classroom anxiety. The Modern Language Journal, 70(2), 125-132.

    Horwitz, E. K., & Young, D. J. (Eds.). (1991). Language and anxiety: From theory and research to classroom implications. Englewood Cliffs, Prentice Hall.

    Hsieh, P. H. (2008). Why are college foreign language students‟ self-efficacy, attitude, and motivation so different? International Education, 38(1), 76-101.

    Huffman, S. (2010). The influence of collaboration on attitudes towards English vocabulary learning Unpublished Master’s Thesis. Iowa State University, Ames.

    Humphreys, T. (2002). Çocuk Eğitiminin Anahtarı: Özgüven (T. Anapa, Çev.). Epsilon.

    Işık, H. (2008). Yabancı dil eğitimimizdeki yanlışlar nereden kaynaklanıyor? Journal of Language and Linguistic Studies, 4(2), 15-26.

    İbrahim, Z., & Rusli, D. (2007). Predicting students’ academic performance: Comparing neural network, decision tree and linear regression. 21. Annual SAS Malasia Forum, Kuala Lumpur, Malezya.

    Kaplan, L. S., & Owings, W. A. (2002). The politics of teacher quality: Implications for principals. NASSP Bulletin, 86, 22-41.

    Kara, A. (2004, Temmuz). Yabancı dil öğretiminde duyuşsal boyut ağırlıklı bir programın öğrencilerin istek ve beklentilerine etkisi. 13. Ulusal Eğitim Bilimleri Kurultayında sunulmuştur. İnönü Üniversitesi Eğitim Fakültesi, Malatya.

    Kirova, S., Petkovska, B., & Koceva, D. (2012). Investigation of motivation and anxiety in Macedonia while learning English as a second/foreign language. Procedia Social and Behavioral Sciences, 46, 3477-3481.

    Kitano, K. (2001). Anxiety in the college Japanese language classroom. The Modern Language Journal, 85(4), 549-566.

    Kleinmann, H. H. (1977). Avoidance behaviour in adult second language acquisition. Language Learning, 27, 93-107.

    Klimova, B. F. (2011). Motivation for learning English at a university level. Procedia Social and Behavioral Sciences, 15, 2599-2603.

    Koch, A. S., & Terrell, T. D. (1991). Affective reactions of foreign language students to natural approach activities and teaching techniques.

    Horwitz, E. K. (2001). Language anxiety and achievement. Annual Review of Linguistics, 21, 112-126.

    Kosko, K. W., & Wilkins, J. L. M. (2011). Communicating quantitative literacy: An examination of open-ended assessment items in TIMSS, NALS, IALS, and PISA. Numeracy, 4(2).

    Krapp, A. (1999). Interest, motivation and learning: An educational-psychological perspective. European Journal of Psychology of Education, 14, 23-40.

    Kurtuldu, P. S. (2007). İlköğretim okulu yöneticilerinin özgüven düzeyleri ile liderlik düzeyleri arasındaki ilişkinin incelenmesi, Unpublished Master’s Thesis. Yeditepe Üniversitesi, İstanbul.

    Kurumehmetoğlu, Ö. (2008). The attitudes on classroom management among EFL teacher in private and state primary and high schools Unpublished Master’s Thesis. Uludağ Üniversitesi, Bursa.

    Liu, M. (2006). Anxiety in Chinese EFL students at different proficiency levels. System, 34(3), 301-316.

    MacIntyre, P. D., & Gardner, R. C. (1994). The subtle effects of language anxiety on cognitive processing in the second language. Language Learning, 44, 283-305.

    MacIntyre, P. D., Noels, K. A., & Clément, R. (1997). Biases in self-ratings of second language proficiency: The role of language anxiety. Language Learning, 47(2), 265-287.

    MacNab, D. (2000). Raising standards in mathematics education: values, vision, and TIMSS. Educational Studies in Mathematics, 42(1), 61-80.

    Ndlovu M., & Mji A. 2012. Alignment between the South African mathematics assessment standards and the TIMSS assessment frameworks. Pythagoras, 33(3), 63-71.

    Oğuz, E. (1999). İlköğretimde yabancı dil (İngilizce) öğretimi sorunları. Unpublished Master’s Thesis, Kocaeli Üniversitesi, Kocaeli.

    Onwuegbuzie, A. J., Bailey, P., & Daley, C. E. (1997), Foreign language anxiety among college students. Paper presented at the annual meeting of the Mid-South Educational Research Association, Memphis, TN.

    Oroujlou, N., & Vahedi, M. (2011). Motivation, attitude, and language learning. Procedia Social and Behavioral Sciences, 29, 994-1000.

    Oxford, R. L. (1997). Cooperative learning, collaborative learning and interaction: Three communicative strands in the language classroom. The Modern Language Journal, 81, 443-456.

    Oya, T., Manola, E., & Greenwood, J. (2004). The influence of personality and anxiety on the oral performance of Japanese speakers of English. Applied Cognitive Psychology, 18, 841-855.

    Öner, N. (1990). Sınav Kaygısı Envanteri El Kitabı, Y.Ö. Rehberliği Tanıtma ve Rehber Yetirme Vakfı Yayınları, No. 1.

    Öner, G., & Gedikoğlu, T. (2007). Ortaöğretim öğrencilerinin İngilizce öğrenimlerini etkileyen yabancı dil kaygısı. Gaziantep Üniversitesi Sosyal Bilimler Dergisi, 6(2), 144-155.

    Özdemir, S., Sezgin, F., Şirin, H., Karip, E., & Erkan, S. (2010). İlköğretim okulu öğrencilerinin okul iklimine ilişkin algılarını yordayan değişkenlerin incelenmesi. Hacettepe Üniversitesi Eğitim Fakültesi Dergisi, 38, 213-224.

    Öztemel, E. (2012). Yapay sinir ağları (1. baskı). Papatya Yayıncılık.

    Pajares, F. (1996). Self-efficacy beliefs in academic settings. Review Of Educational Research, 66(4), 543-578.

    Palacios, L. M. (1998). Foreign language anxiety and classroom environment: A study of Spanish university students (Unpublished Doctoral Thesis). University of Texas, Austin.

    Pan, V. L., & Akay, C. (2015). Eğitim fakültesi öğrencilerinin girişimcilik düzeylerinin çeşitli değişkenler açısından incelenmesi. NWSA Education Sciences, 9(6), 125-138.

    Perkins-Gough, D. (2008). Special report/school climate: Urban parents’ views. Educational Leadership, 66(1), 89-91.

    Pineda, A. S. (2011). Attitude, motivation and English language learning in a Mexican college context (Unpublished Doctoral Thesis). (UMI No. 3457304).

    Price, M. L. (1991). The subjective experience of foreign language anxiety: Interviews with highly anxious students. In E. K. Horwitz, & D. J. Young (Eds.), Language anxiety: From theory and research to classroom implications (pp.101-108). Englewood Cliffs, Prentice Hall.

    Quiles, N. S. (2009). Attitudes of elementary students towards the learning and use of English: Implications for curriculum design/implementation (Unpublished Doctoral Thesis). (UMI No. 3365010)

    Rifai, N. A. (2010). Attitude, motivation, and difficulties involved in learning the English Language and factors that affect motivation in learning it. Procedia Social and Behavioral Sciences, 2, 5216-5227.

    Ryan, R. M., & Deci, E. L. (2002). Overview of self-determination theory: An organismic-dialectical perspective. E. L. Deci & R. M. Ryan (Dü) içinde, Handbook of self-determination research (pp. 3-33). Rochester, University of Rochester Press.

    Sapir, S., & Aronson, A. E. (1990). The relationship between psychopathology and speech and language disorder in neurological patients. Journal of Speech Hearing Disorders, 55, 503-509.

    Sarıgül, H. (2000). Trait anxiety and foreign language anxiety and their effects on learners’ foreign language proficiency and achievement. Unpublished Master’s Thesis, Boğaziçi Üniversitesi, İstanbul.

    Schunk, D. H. (2008). Learning theories: An educational perspective. (5th ed.). Upper Saddle River, Pearson Education, Inc.

    Scovel, T. (1991). The effect of affect on foreign language learning: A review of anxiety research. Horwitz, E. K. & Young, D. J. (Eds.). (1991). Language and anxiety: From theory and research to classroom implications. Englewood Cliffs, Prentice Hall.

    Senemoğlu, N. (2005). Gelişim, öğrenme ve öğretim: Kuramdan uygulamaya. Gazi Kitabevi.

    Shoffner, M. (2006). The potential of weblogs in pre-service teachers’ reflective practice. In C. Crawford et al. (Eds.), Proceedings of Society for Information Technology and Teacher Education International Conference 2006 (pp. 2409–2415). Chesapeake.

    Slavin, R. E. (1991). Synthesis of research on cooperative learning. Educational Leadership, 48, 71-82.

    Spada, N., & Lightbown, P. (2000). How languages are learnt. (2nd ed.). Oxford University Press.

    Sparks, R. L., & Ganschow, L. (1991). Foreign language learning differences: Affective or native language aptitude differences? Modern Language Journal, 75(1), 3-16.

    Sparks, R., & Ganschow, L. (1993). The Impact of Native Language Learning Problems on Foreign Language Learning: Case Study Illustrations of the Linguistic Coding Deficit Hypothesis. Modern Language Journal, 77, 58-74.

    Sparks, R. L., & Ganschow, L. (2007). A strong inference approach to causal factors in foreign language learning: A response to MacIntyre. The Modern Language Journal, 79(2), 235-244.

    Suwantarathip, O., & Wichadee, S. (2010). The impacts of cooperative learning on anxiety and proficiency in an EFL class. Journal of College Teaching & Learning, 7(11), 51-57.

    Taş, Y. (2006). Kaygı nedir? Ankara: Bilkent Üniversitesi Öğrenci Gelişim ve Danışma Merkezi.

    Tepehan, T. (2011). Türk öğrencilerinin PISA başarılarının yordanmasında yapay sinir ağı ve lojistik regresyon modeli performanslarının karşılaştırılması. Unpublished Doctoral Thesis. Hacettepe Üniversitesi, Ankara.

    TIMSS (2011). TIMSS 2011 international results in mathematics. MA: TIMSS & PIRLS International Study Center, Boston College.

    Toprak, E. (2017). Yapay sinir ağı, karar ağaçları ve ayırma analizi yöntemleri ile PISA 2012 matematik başarılarının sınıflandırılma performanslarının karşılaştırılması. Unpublished Doctoral Thesis. Hacettepe Üniversitesi, Ankara.

    Tubbs, J. E., & Garner, M. (2008). The impact of school climate on school outcomes. Journal of College Teaching and Learning, 5(9), 17-26.

    Vallerand, R.J., Pelletier, L.G., Blais, M.R., Biere, N.M., Senecal, C., and Valleries, E.F., (1992). The Academic Motivation Scale: A measure of intrinsic, extrinsic and amotivation in education. Educational Psychological Measurement, 52, 1003-1017.

    Vygotsky, L. S. (1986). Thought and language. Cambridge, MIT Press.

    Weiser, D. A., & Riggio, H. R. (2010). Family background and academic achievement: does self-efficacy mediate outcomes? Social Psychological Education, 13, 367-383.

    Welsh, W. N. (2000). The effects of school climate on school disorder. Annals of the American Academy of Political and Social Science, 567, 88-107.

    White, A. R., & Bowers, D. C. (2008). The relationship among race, gender, and high school students’ self-efficacy in English language arts (Unpublished doctoral dissertation). Fordham University, New York.

    Yan, J. X., & Horwitz, E. K. (2008). Learners’ perceptions of how anxiety interacts with personal and instructional factors to influence their achievement in English.

    Yanar, B. H. (2008). Yabancı dil hazırlık eğitimi alan ve almayan Anadolu Lisesi öğrencilerinin yabancı dil özyeterlik algılarının ve İngilizce dersine yönelik tutumlarının incelenmesi Yayınlanmamış Yüksek Lisans Tezi. Ege Üniversitesi, İzmir.

    Yeşilyaprak, B. (Ed.) (2011). Eğitim psikolojisi: Gelişim-öğrenme-öğretim. (8. Baskı). Pegem Akademi Yayıncılık.

    Ying-Ling, Y., & Kondo, D. S. (2004). Strategies for coping with language anxiety: the case of students of English in Japan. ELT Journal, 58(3), 258-265.

    Young, D. J. (ed.). (1999). Affect in foreign language and second language learning: A practical guide to creating a low-anxiety classroom atmosphere. McGraw-Hill.

    Yörükoğlu, A. (1986). Gençlik Çağı: Ruh Sağlığı Ve Ruhsal Sorunları. Türkiye İş Bankası Yayınları, 270, 26.

    Zhanibek, A. (2001). The relationship between language anxiety and students’ participation in foreign language classes, Unpublished Master’s Thesis. Bilkent University, Ankara.

    Zhao, L. (2012). Investigation into motivation types and influences on motivation: The case of Chinese Non-English majors. English Language Teaching 5(3), 100-122. qualitative analysis of EFL learners in China. Language Learning, 58(1), 151-183.