... still considered a unitary concept made up of several components, the validity of each of which will contribute to the overall validity of test application and use. Additionally, validity can ... VIETNAM NATIONAL UNIVERSITY HANOI UNIVERSITY OF LANGUAGES AND INTERNATIONAL STUDIES POST-GRADUATE DEPARTMENT HOÀNG HỒNG TRANG A STUDY ON VALIDITY OF 45 MINUTE TESTS FOR THE 11 TH ... languages. Furthermore, the scope of an MA thesis could only allow for an investigation into two types of validity, that is, content and construct validity and the area chosen for investigation...