Madiha Khalid(4288) creator text Islamabad (unpublished) 2020 monographic xvi, 83 p. ; 30 cm. : ill., Col. Submitted in partial fulfilment of requirements for the award of degree of Master in Science of Speech and Language Pathology Therapy to the Faculty of Rehabilitation and Allied Health Sciences (FRAHS) Includes bibliographical references Thesis supervisor : madam Raffa Mubeen Thesis (MS-SLP)--Riphah International University, 2020 English Speech language pathology item response theory Item characteristic curve Confidence interval FRAHS 616.855 MAD