ITEM PARAMETER DRIFT IN CERTIFICATE EXAMINATIONS AND IT’S IMPLICATION ON DECISION MAKING
Abstract
In certificate examinations, the validity of inferences made from the examination scores are of great importance. To make valid inferences regarding the examinee’s ability, the examination scores must be true representative of the examinees knowledge. When examination scores fail to represent examinee’s ability, it creates a misrepresentation that could threaten the fairness and validity of the examination scores. One phenomenon that is capable of causing such score misrepresentation is item parameter drift (IPD). This paper reviews the concept of IPD, causes and consequences of drift. It throws light on some methods for detecting IPD along with its implication on decision making with regards to judgement after detecting drift. Keywords: Item parameter, Drift, Certificate examinations, Implication, Decision making
DR (MRS) MATILDA UVIE ORHERUATA (2015)
ITEM PARAMETER DRIFT IN CERTIFICATE EXAMINATIONS AND IT’S IMPLICATION ON DECISION MAKING
Abstract In certificate examinations, the validity of inferences made from the examination scores are of great importance. To make valid inferences regarding the examinee’s ability, the examination scores must be true representative of the examinees knowledge. When examination scores fail to represent examinee’s ability, it creates a misrepresentation that could threaten the fairness and validity of the examination scores. One phenomenon that is capable of causing such score misrepresentation is item parameter drift (IPD). This paper reviews the concept of IPD, causes and consequences of drift. It throws light on some methods for detecting IPD along with its implication on decision making with regards to judgement after detecting drift. Keywords: Item parameter, Drift, Certificate examinations, Implication, Decision making