Yazd University Faculty of Humanities and Social Sciences Department of Language and Literature A Dissertation Submitted in Partial Fulfillment of the Requirements for the Ph.D Degree in English Language Teaching A Study on Writers’ Use of Appraisal Resources in Academic Texts By: Ali Hashemi Evaluated and Approved by Dissertation Committee, on June 23, 2022 1. Fatemeh Mahdavirad, Assist. Professor (Supervisor) 2. Golnar Mazdayasna, Assoc. Professor (Advisor) 2. AliMohammad Fazilatfar. Professor (Advisor) 3. AliAkbar Jabbari, Assoc. Professor (Examiner) 4. Behzad Ghonsouli. Professor (Examiner) 5. Rahman Sahragard. Professor (Examiner)