Test reliability describes the degree to which a test consistently measures the knowledge or abilities it is supposed to measure. Many factors can cause a test results to be inconsistent and, therefore, cause a test to be unreliable. A test may contain unclear directions or flawed test items; the students taking a test can be distracted, ill, or fatigued; and test scorers may misunderstand a test rubric or hold biases. Test developers and instructors can check test reliability through a number... więcej

Salem Press Encyclopedia, 2021. 6p.