Profile

Name: Vahid Aryadoust
Telephone: 6601 2504
Email: vahid.aryadoust@nus.edu.sg
Office: CELC #02-24 (10 Architecture Drive, Singapore 117511)

Academic Qualifications

  • BA, English Translation, Kerman University, Iran
  • MA, Teaching English as Foreign Language, Shiraz Azad University, Iran
  • PhD, National Institute of Education (NIE), Singapore

Awards

  • Spaan Fellowship Program, Principal Investigator, Cambridge-Michigan Language Assessment (CaMLA), 2013-2014
  • Spaan Fellowship Program, Co-Principal Investigator, University of Michigan (now CaMLA), 2009-2010
  • NIE Dean’s Commendation Award 2012
  • NIE Dean’s Commendation Award 2011
  • NIE Dean’s Commendation Award 2010
  • PhD scholarship, National Institute of Education, 2008-2012
  • Spaan Fellowship Program, Co-Principal Investigator, University of Michigan (now CaMLA), 2009-2010

Modules/Courses Taught

  • ES1000
  • ES1102 English for Academic Purposes

Research Interests

  • Neuro-fuzzy modelling
  • Language assessment
  • Teaching language skills
  • Test validation
  • Latent trait modeling

Professional Societies

  • Applied Linguistics Association of Canada, Canada
  • International Listening Association, USA
  • National Council on Educational Measurement (NCEM), USA
  • AAAL - American Association of Applied Linguistics, USA
  • SAAL - Singapore Association for Applied Linguistics, Singapore
  • TEFL Asia
  • SFIL - Society for Iranian Linguistics

Publications

Books

  • Aryadoust, V. (forthcoming). Building a validity argument for a listening test of academic proficiency. New Castle: Cambridge Scholars Publishing.
  • Aryadoust, V. (forthcoming). Measurement in behavioral sciences. Singapore: McGraw-Hill.
  • Aryadoust, V. (2006). A guidebook to passages 1. Shiraz: Sandbad Publication.
  • Aryadoust, V. (2007). A dictionary of sociolinguistics, plus pragmatics and languages. Shiraz: Faramatn Publication.
  • Aryadoust, V., Akbarzadeh S., & Nasiri, E. (2007). IELTS writing tutor, writing task2, general and academic. Tehran: Jungle Publication.
  • Aryadoust, V., Akbarzadeh S., & Nasiri, E. (2007). IELTS writing tutor, writing task1, academic module. Tehran: Jungle Publication.
  • Aryadoust, V., Akbarzadeh S., & Nasiri, E. (2007). IELTS writing tutor, writing task1, general module. Tehran: Jungle Publication.
  • Aryadoust, V., Akbarzadeh, S., Afarinesh, A. (2008). A guidebook to passages 2. Shiraz: Sandbad Publication.
  • Bagheri, M.S., Nikpoor, S., & Aryadoust, S.V. (2007). Crack IELTS in a flash. Shiraz: Sandbad Publication.

Articles

  • Aryadoust, V. (2013/forthcoming). Predicting item difficulty in a language test with an Adaptive Neuro Fuzzy Inference System. Proceedings of IEEE Symposium Series on Computational Intelligence, Singapore.
  • Aryadoust, V., & Pui, P. (2012). A commentary on “Establishing a Life-Language Model of Proficiency: A New Challenge for Language Testers”. Iranian Journal of Language Assessment, 2(2), 125-130.
  • Aryadoust, V. (2012). Differential item functioning in while-listening performance tests: The case of IELTS listening test. International Journal of Listening, 26(1), 40-60.
  • Aryadoust, V. (2012). How does “sentence structure and vocabulary” function as a scoring criterion alongside others in writing assessment? Manuscript submitted for publication. Iranian Journal of Language Testing, 2(1), 28-58.
  • Aryadoust, V. (2012). Evaluating the psychometric quality of an ESL placement test of writing: A Many-Facets Rasch study. Linguistics Journal, 6(1), 8-33.
  • Aryadoust, V. (2012). Using cognitive diagnostic assessment to model the structure of the lecture comprehension section of the IELTS listening test: A sub-skill-based approach. Asian EFL Journal, 13(4), 81-106.
  • Aryadoust, V. (2011). Constructing validity arguments for the speaking and listening modules of international English language testing system. Asian ESP Journal, 7(2), 28-54.
  • Aryadoust, V. (2011). Application of the fusion model to while-listening performance tests. SHIKEN: JALT Testing & Evaluation SIG Newsletter, 15 (2), 2-9. http://jalt.org/test/ary_2.htm
  • Aryadoust, V. (2011). Cognitive diagnostic assessment as an alternative measurement model. SHIKEN: JALT Testing & Evaluation SIG Newsletter, 15 (1), 2-6. http://jalt.org/test/ary_1.htm
  • Aryadoust, V. (2010). Investigating writing sub-skills in testing English as a foreign language: A structural equation modeling study. TESL-EJ, 13(4), 1-20.
  • Aryadoust, V. (2009). A functional study of New Interchange, Intro. The English Teacher, 38, 30-57.
  • Aryadoust, V. (2009). Mapping Rasch-based measurement onto the argument-based validity framework. Rasch Measurement Transactions, 23(1), 1192-3. http://www.rasch.org/rmt/contents.htm
  • Aryadoust, V. (2009). The impact of Rasch item difficulty on confirmatory factor analysis. Rasch Measurement Transactions, 23(2), 1207. http://www.rasch.org/rmt/contents.htm
  • Aryadoust, V., Akbarzadeh S., & Akbarzadeh S. (2011). Psychometric characteristics of the Persian version of the Multidimensional School Anger Inventory–Revised. Asia Pacific Journal of Education, 31(1), 51-64.
  • Aryadoust, V., Goh, C., & Lee, O. K. (2011). An investigation of differential item functioning in the MELAB listening test. Language Assessment Quarterly, 8(4), 361-385.
  • Aryadoust, V., Goh, C., & Lee, O. K. (in press). Developing an academic listening self-assessment questionnaire: A study of modeling academic listening. Psychological Test and Assessment Modeling.
  • Aryadoust, V., & Lashkari, H. (2009). Vocabulary acquisition in EFL learners. Asian EFL Journal, 11(3), 329-352.
  • Ng, H. L., Aryadoust, V., & Yau C. M. (2010). An investigation of societal and environmental consciousness among Singaporean early teens. Rasch Measurement Transactions, 24(2), 1276-77.
  • Shahsavar, Z., Tan, B. H., Aryadoust, V. (2010). Investigating the factor structure of the Blog Attitude Scale. The Turkish Online Journal of Distance Education, 11 (4).
  • Goh, C., & Aryadoust, V. (2010). Investigating the construct validity of MELAB listening test through the Rasch analysis and correlated uniqueness modeling. Spaan Fellowship Working Papers in Second of Foreign Language Assessment, 8, 31-68. Ann Arbor, MI: University of Michigan English Language Institute.
  • Sepassi, F., & Aryadoust, V. (2007). Testing the natural order hypothesis and the order of acquiring plural –S and SVA –S in EFL learners. Linguistics Journal, 2 (2), 7-32.

Book review

  • Chapelle, C.A., Enright, M.K., Jamieson, J.M. (Eds.) (2008). Building a validity argument for the test of English as a foreign language. New York: Routledge. 370 pp. $ 41.30 (paperback). ISBN 10: 0-8058-5456-8. (2009/forthcoming; Asian ESP Journal).

Book chapter

  • Aryadoust, V. & Goh, C. (forthcoming). Exploring the relative merits of cognitive diagnostic models and confirmatory factor analysis for assessing listening comprehension. In E. D. Galaczi & C. J. Weir (Eds.), Studies in Language Testing volume of Proceedings from the ALTE Krakow Conference, 2011. Cambridge: Cambridge University Press.
  • Zhang, L. J., Aryadoust, V., Zhang, D. L. (2013 forthcoming). Taking stock of the effects of strategies-based instruction on writing in Chinese and English in Singapore primary classrooms. In R. E. Silver & W. Bokhorst-Heng (Eds.), Quadrilingual Education in Singapore: Pedagogical Innovation in Language Education. Boston, MA: Springer.

Research Projects

  • Spaan-Fellowship Research Program, 2013-2014, Predicting Listening Item Difficulty with Language Complexity Measures and Adaptive Neuro-Fuzzy Inference Systems
  • Development of paragraph writing skills of first-year university students: A latent growth curve model approach
  • An impact study of the ES1000 module
  • Developing a diagnostic writing assessment system by using the fusion model (ongoing)
  • Spaan-Fellowship Research Program, 2009-2011; Construct Validity of the MELAB Listening subtest; co-principal researcher. The University of Michigan-English Language Institute (completed).
  • Building a validity argument for the International English Proficiency Test (IEPT) – the Learning Resource Network, London) (ongoing).
  • Validation of HIV/AIDS Risk Factors Inventory (HARFI) (2008_2011) (completed).
  • A Contrastive Analysis of Verbs and Tenses in Modern Hawrami Kurdish and Persian – the UNESCO’s endangered languages program (ongoing).
  • Using Adaptive Neuro-Fuzzy Inference System [ANFIS] and path analysis to explore factors influencing item difficulty in while-listening performance tests (ongoing).
  • Establishing validity arguments for Rasch model-based measurement in language assessment (ongoing).

Seminars & Conferences

  • Aryadoust, V. (2012, April). Measuring Language Ability. Paper presented at the 3rd NIE-ELL Postgraduate Conference (PGC) on Language and Education, Singapore.
  • Aryadoust, V. (2011, April). From Cronbach and Meehl to Kane: An overview of validation in educational and language assessment. Paper presented at the 2nd NIE-ELL Postgraduate Conference (PGC) on Language and Education, Singapore.
  • Aryadoust, V. (2010, May). Using Many-Facets Rasch Model to Validate Test of Second Language Writing. Paper presented at the PROMS 2010, KL, Malaysia.
  • Aryadoust, V. (2009, July). Establishing validity arguments for Rasch model-based measurement in language assessment. Paper Presented at the Pacific Rim Objective Measurement Symposium 2009, Honk Kong, (PROMS 2009 HK).
  • Aryadoust, V. (2009, November). A Rasch investigation of essay writing tests in Iran. Paper Presented at the JALT Conference, Shizuaka, Japan.
  • Aryadoust, V. (2009, November). Developing and evaluating the validity of a second language writing model: A structural equation modeling approach. Paper Presented at ICELT Conference, Malacca, Malaysia.
  • Aryadoust, V., Aryadoust, M., & Nejatolahi, F. (2009, July). Validity of the Persian Version of the Multidimensional School Anger Inventory-Revised: A factor and Rasch study. Paper Presented at the Pacific Rim Objective Measurement Symposium 2009, Honk Kong, (PROMS 2009 HK).
  • Aryadoust, V., Lee, O. K., & Goh, C. (2011, July). Investigating the validity argument of the listening module of the International English Language Testing System. Paper presented at the PROMS 2011 conference, Singapore.
  • Aryadoust, V., & Goh, C. (2009, June). A Rasch analysis of an international English language testing system sample listening test. Proceedings of the 3rd Redesigning Pedagogy International Conference, National Institute of Education, Nanyang Technological University, Singapore.
  • Aryadoust, V., & Goh, C. (2009, March). Investigating the construct validity of the listening module of an international standardized proficiency test. Poster presented at The 30th Annual NYS TESOL Applied Linguistics Conference, Teachers’ College, New York.
  • Aryadoust, V., & Goh, C. (2009, November). Investigating the factor structure of an IELTS listening sample test. Paper Presented at the ICELT Conference, Malacca, Malaysia.
  • Aryadoust, V., & Goh, C. (2010, June). An investigation of Differential Item Functioning in the Michigan English Language Assessment Battery Listening Test. Paper presented at the Probabilistic Models for Measurement in Education, Psychology, Social Science and Health Conference, Copenhagen.
  • Aryadoust, V., & Goh, C. (2010, December). Using a Two-Parameter Logistic Item Response Theory model to validate the IELTS listening test. Proceedings of the Applied Linguistics Association of Korea (ALAK) International Conference, Seoul, 210-215.
  • Aryadoust, V., & Goh, C. (2011, April). Cognitive diagnostic assessment of second language listening and reading skills. Paper presented at the RELC 2011 Symposium, Singapore.
  • Aryadoust, V., & Goh, C. (2011, June). Developing an academic listening self-assessment questionnaire: An exploratory study of academic listening macroskills. Paper presented at the Applied Linguistics Association of Canada Conference, Fredericton, Canada.
  • Aryadoust, V., & Goh, C. (2011, July). Exploring the relative Merits of cognitive diagnostic assessment models and confirmatory factor analysis. Paper presented at the 4th ALTE, Krakow, Poland.
  • Aryadoust, V., & Shahsavari, A. (2010, May). The effect of recasts on the addressee in learning English. Paper presented at the CELC Symposium 2010, National University of Singapore, Singapore.
  • Aryadoust, S.V., & Shahsavar, Z. (2007, September). Validation of the TOEFL writing: Task 2. Paper Presented at the IELTI Conference, Tehran, Iran.
  • Aryadoust, S.V., Aryadoust, M., & Nejatollahi, F. (2009, July). Cross-validation of the Persian version of the multidimensional school anger inventory-revised. Paper Presented at the Pacific Rim Objective Measurement Symposium 2009 (PROMS 2009 Hong Kong).
  • Goh, C., & Aryadoust, V. (2010, May). Examining construct validity in listening tests: The case of MELAB. Paper presented at the CELC Symposium 2010, National University of Singapore, Singapore.
  • Nejatollahi, F., Aryadoust, V., & Burnie, J. (2006, September). Production and selection of human recombinant antibodies for immunotherapy. Paper presented at the first joint meeting of European National Society of Immunology, 1st European Congress of Immunology, September 6-9, Palais de congres, Paris, France.
  • Nejatollahi, F., Hodgetts, S., Aryadoust, V., & Burnie, J. (2006). Sequence and specificity analysis of neutralizing single chain fragment variable antibodies to human cytomegalovirus. Poster presented at the XXV Congress of the European Academy of Allergology & Clinical Immunology, Vienna, Austria.
  • Ng, H., L., & Aryadoust, V. (2011). Rasch rating scale analysis of teenager’s lifestyle questionnaire: A study of Singaporean Secondary School Students. Paper presented at the PROMS 2011 conference, Singapore.
  • Shahsavar, Z., Zahedi, B, & Aryadoust, S.V. (2007, September). The effect of the Mozart music on reading comprehension. Paper Presented at the IELTI Conference, Tehran, Iran.