TY - RPRT TI - Construct-irrelevant variance and flawed test questions: Do multiple-choice item-writing principles make any difference? AU - Stevn M Downing PY - 2002 DO - 10.1097/00001888-200210001-00032 UR - https://pubmed.ncbi.nlm.nih.gov/12377719/ ID - 12377719 ER -