Journal of Language Horizons, Alzahra University — 9 Volume 4, Issue 2, Autumn – Winter 2020 (Biannual – Serial No. 8) — 9 On the Construct Validity of the Iranian Ministry of Health Language Exam (MHLE) Research Article S. Susan Marandi 1 Leila Tajik* 2 Leila Zohali 3 Received: 2019-09-02 | Revised (1): 2020-02-28 | Accepted: 2020-03-16 Abstract Considering validity as a unitary concept, this study investigated the con- struct validity of the Iranian Ministry of Health Language Exam (MHLE). To meet this objective, we first conducted item analysis and reliability analysis, and verified KR20-if-item-deleted indices on the scores of 987 MHLE test takers before running factor analysis. Though the test was found to enjoy a high level of reliability, it suffered from 28 problematic items flagged through item analysis and KR20-if-item-deleted indices. Next, we ran factor analysis on the data, screened through item analysis, by implementing Horn’s parallel analysis and Velicer’s minimum average partial (MAP) tests. Parallel analysis resulted in overfactoring. The MAP 1 Associate Professor, Department of English Language and Literature, Faculty of Literature, Alzah- ra University, Tehran, Iran; susanmarandi@alzahra.ac.ir 2 Assistant Professor, Department of English Language and Literature, Faculty of Literature, Alzahra University, Tehran, Iran (corresponding author); tajik_l@alzahra.ac.ir 3 M.A. graduate, Department of English Language and Literature, Faculty of Literature, Alzahra University, Tehran, Iran; lzohali69@gmail.com DOI: 10.22051/lghor.2020.28036.1180